Adélie penguins are small Antarctic penguins with black heads, white bellies, and bright white rings around their eyes. They live around Antarctica, nest on rocky ice-free ground, and dive for krill, fish, and other small sea animals.

Learn 10 Adélie Penguin facts for kids →

African penguins are flightless seabirds from the coasts of South Africa and Namibia. They have black-and-white feathers, pink patches above the eyes, donkey-like braying calls, and a conservation story that needs urgent help.

Learn 10 African Penguin facts for kids →

Albatrosses are giant seabirds with long narrow wings built for gliding over oceans. They spend much of life at sea, feed on squid and fish, and return to remote islands to nest and raise chicks.

Learn 10 Albatross facts for kids →

Angelfish is a name used for different beautiful fish, but the popular freshwater angelfish is a tall, graceful cichlid from tropical South America. It has a flat body, long fins, and dark vertical bands that help it blend among plants and roots.

Learn 10 Angelfish facts for kids →

Anglerfish are strange ocean fish famous for using a built-in fishing lure to attract prey. Many well-known anglerfish live in the deep sea, where darkness, pressure, and weird adaptations create a truly alien ocean world.

Learn 10 Anglerfish facts for kids →

Auks are diving seabirds that live in northern oceans. They have short wings, strong swimming skills, and thick bodies that help them dive underwater for fish, crustaceans, and other sea foods.

Learn 10 Auk facts for kids →

Barnacles are ocean crustaceans that spend adult life attached to rocks, shells, boats, piers, whales, or other surfaces. They may look like tiny shells or bumps, but they are relatives of crabs, shrimp, and lobsters.

Learn 10 Barnacle facts for kids →

Barracudas are fast, powerful fish known for long bodies, sharp teeth, and lightning-quick attacks. They live in warm oceans around reefs, seagrass beds, and open water, where they hunt fish and other prey.

Learn 10 Barracuda facts for kids →

Beluga whales are small white whales that live in cold Arctic and subarctic waters. They are social, vocal, and famous for their rounded melon heads, flexible necks, and many whistles, clicks, chirps, and squeals.

Learn 10 Beluga Whale facts for kids →

Blobfish are deep-sea fish with soft jellylike bodies that help them live under strong ocean pressure. They look much more fish-shaped in the deep sea, but when brought to the surface, pressure changes can make them look blobby.

Learn 10 Blobfish facts for kids →

Blue tangs are bright tropical reef fish with beautiful blue coloring and a yellow tail in many well-known species. They belong to the surgeonfish family, which is named for sharp spines near the tail.

Learn 10 Blue Tang facts for kids →

Blue whales are the largest animals on Earth. These gentle ocean giants are mammals, breathe air through blowholes, use baleen to filter tiny krill, and can make deep sounds that travel through the sea.

Learn 10 Blue Whale facts for kids →

Blue-ringed octopuses are small ocean octopuses with bright blue warning rings. They may look beautiful, but they are extremely venomous, so people should never touch them and should admire them only from a safe distance.

Learn 10 Blue-Ringed Octopus facts for kids →

Bluefin tuna are powerful ocean fish built for speed, distance, and life in the open sea. They have streamlined bodies, crescent-shaped tails, warm swimming muscles, and a long migration story that stretches across huge ocean spaces.

Learn 10 Bluefin Tuna facts for kids →

Boobies are tropical seabirds known for strong flight, webbed feet, pointed wings, and dramatic plunge-dives into the ocean. Some species, like the blue-footed booby, are famous for bright feet and funny courtship dances.

Learn 10 Booby facts for kids →

Bowhead whales are huge Arctic baleen whales with dark bodies, massive bow-shaped heads, thick blubber, and giant mouths. They live in icy northern waters and can survive for an extremely long time.

Learn 10 Bowhead Whale facts for kids →

Boxfish are unusual reef fish with stiff, box-like bodies covered by hard bony plates. They swim slowly using small fins, often looking like tiny floating boxes as they explore reefs, lagoons, and sandy ocean areas.

Learn 10 Boxfish facts for kids →

Brittle stars are ocean invertebrates related to sea stars. They usually have a small central disk and five long flexible arms that can wriggle, crawl, break off, and regrow if needed.

Learn 10 Brittle Star facts for kids →

Bull sharks are strong, stocky sharks famous for living in both salt water and freshwater. They can swim into rivers, use shallow coastal nursery areas for young sharks, and hunt with sharp senses, but wild sharks should always be treated with respect.

Learn 10 Bull Shark facts for kids →

Butterflyfish are small, bright reef fish that live in warm tropical oceans. Their flat bodies, bold stripes, tiny mouths, and eye-like spots help them dart around coral reefs while searching for small animals, coral polyps, and other reef foods.

Learn 10 Butterflyfish facts for kids →

Chinstrap penguins are small Antarctic penguins named for the thin black line under the chin. They breed in noisy colonies on rocky Antarctic and subantarctic islands and feed mostly on krill and other small ocean animals.

Learn 10 Chinstrap Penguin facts for kids →

Clownfish are bright reef fish with orange, white, yellow, or black patterns. They are famous for living safely among sea anemone tentacles in warm shallow reefs of the Indian and Pacific oceans.

Learn 10 Clownfish facts for kids →

Cod are cold-water ocean fish known for speckled bodies, pale side lines, three dorsal fins, and a small chin barbel. The name cod often refers to Atlantic cod, but there are several cod species in the cod family.

Learn 10 Cod facts for kids →

Coelacanths are rare deep-water fish with fleshy lobe-like fins and an ancient family history. Scientists knew them from fossils and were amazed when a living coelacanth was found off South Africa in 1938.

Learn 10 Coelacanth facts for kids →

Cone snails are marine snails with beautiful cone-shaped shells and powerful venom. They are slow-moving predators that use a harpoon-like tooth to catch prey, so wild cone snails should never be picked up or handled.

Learn 10 Cone Snail facts for kids →

Corals are tiny marine animals called polyps. Many coral polyps live together in colonies, build hard limestone skeletons, and create coral reefs that become busy underwater homes for fish, crabs, sea turtles, and many other ocean creatures.

Learn 10 Coral facts for kids →

Cowfish are boxfish relatives named for horn-like spines on the head of some species, especially the longhorn cowfish. These odd reef fish have stiff armored bodies, small mouths, slow hovering movement, and cheerful yellow or spotted patterns.

Learn 10 Cowfish facts for kids →

Crown-of-thorns starfish are large spiky sea stars found on coral reefs. They eat coral polyps and have venomous thorn-like spines, so they should be watched from a safe distance and never touched.

Learn 10 Crown-of-Thorns Starfish facts for kids →

Cuttlefish are clever sea animals related to octopuses and squid. They can change color and pattern, use ink to escape, and have a special internal shell called a cuttlebone.

Learn 10 Cuttlefish facts for kids →

Decorator crabs are marine crabs that hide by attaching bits of algae, sponge, shell, or other ocean material to their bodies. Their disguise can help them blend into reefs, tide pools, or seafloor habitats.

Learn 10 Decorator Crab facts for kids →

Dolphins are smart, social marine mammals known for jumping, clicking, whistling, swimming fast, and using echolocation to find their way underwater. They breathe air, live in groups, and give birth to live babies called calves.

Learn 10 Dolphin facts for kids →

Dugongs are gentle marine mammals often called sea cows. They live in warm coastal waters, graze on seagrass, breathe air at the surface, and use a whale-like fluked tail to swim.

Learn 10 Dugong facts for kids →

Flounders are flatfish that live on or near the seafloor. They hatch looking like ordinary fish with one eye on each side, but as they grow, one eye moves to the other side and the fish begins resting flat on the bottom.

Learn 10 Flounder facts for kids →

Flying fish are ocean fish with large wing-like fins that let them glide above the water. They do not flap like birds, but they can launch from the sea and sail through the air to escape predators.

Learn 10 Flying Fish facts for kids →

Frigatebirds are large tropical seabirds with huge wings, long forked tails, hooked bills, and amazing gliding skills. Male frigatebirds are famous for inflating bright red throat pouches during courtship displays.

Learn 10 Frigatebird facts for kids →

Gentoo penguins are bold penguins with bright orange bills, orange feet, and a white stripe across the head. They breed on subantarctic islands and parts of the Antarctic region, dive for food, and are famous for fast underwater swimming.

Learn 10 Gentoo Penguin facts for kids →

Giant clams are huge reef mollusks with two heavy shells and colorful mantles. They live in warm Indo-Pacific coral reefs and share a clever partnership with tiny algae that help feed them with sunlight-made food.

Learn 10 Giant Clam facts for kids →

Giant isopods are enormous deep-sea crustaceans that look like huge pill bugs from the ocean floor. They have armored plates, 14 walking legs, big eyes, long antennae, and a scavenger lifestyle in the dark deep sea.

Learn 10 Giant Isopod facts for kids →

Giant squid are mysterious deep-sea animals with huge eyes, eight arms, two extra-long tentacles, a beak, and a soft body. They live far below the ocean surface, where humans rarely see them alive.

Learn 10 Giant Squid facts for kids →

The goblin fish, often written as goblinfish, is an odd-looking scorpionfish relative found in southern Australian marine waters. It has a lumpy body, strong camouflage, and venomous fin spines, so it should be admired from a safe distance.

Learn 10 Goblin Fish facts for kids →

Goblin sharks are strange-looking deep-sea sharks with long flat snouts, soft bodies, sharp teeth, and jaws that can shoot forward to grab prey. They live far below the ocean surface and are rarely seen by people.

Learn 10 Goblin Shark facts for kids →

Gobies are usually small fish found around shores, reefs, rivers, and sandy bottoms around the world. Many live near the bottom, and some have fused pelvic fins that work like a small suction cup.

Learn 10 Goby facts for kids →

Great white sharks are large predatory fish with powerful bodies, sharp teeth, strong tails, and amazing senses. They are important ocean hunters, but they are also often misunderstood because of scary movies and myths.

Learn 10 Great White Shark facts for kids →

Green sea turtles are large hard-shelled sea turtles that live in warm ocean waters. Adults mostly eat seagrass and algae, and females return to sandy beaches to lay eggs.

Learn 10 Green Sea Turtle facts for kids →

Halibut are large flatfish that live on or near the ocean floor in cold northern waters. Adult halibut have both eyes on one side of the head, which helps them lie flat and watch for prey above the sandy or muddy bottom.

Learn 10 Halibut facts for kids →

Hammerhead sharks are famous for their wide hammer-shaped heads. These unusual heads place their eyes and nostrils far apart, helping hammerheads sense the ocean around them as they swim.

Learn 10 Hammerhead Shark facts for kids →

Hawksbill sea turtles are beautiful reef turtles with pointed beak-like mouths and patterned shells. They live in warm oceans, help coral reefs by eating sponges, and are critically endangered, so protecting beaches and reefs matters.

Learn 10 Hawksbill Sea Turtle facts for kids →

Hermit crabs are crustaceans with soft curved abdomens that need protection. Many live inside empty snail shells, changing to larger shells as they grow, while using pincers, antennae, legs, and careful shell shopping to survive.

Learn 10 Hermit Crab facts for kids →

Horseshoe crabs are ancient-looking sea animals with hard horseshoe-shaped shells, long pointed tails, and blue blood. Even though they are called crabs, they are not true crabs and are more closely related to spiders and scorpions.

Learn 10 Horseshoe Crab facts for kids →

Humpback whales are large ocean mammals famous for their long flippers, haunting songs, huge leaps, and clever feeding tricks. They are baleen whales that filter small sea animals from the water.

Learn 10 Humpback Whale facts for kids →

Japanese spider crabs are giant ocean crabs with extremely long legs, spiky shells, and a spider-like look. They live in Pacific waters near Japan and are famous for having the largest leg span of any living crab.

Learn 10 Japanese Spider Crab facts for kids →

Jellyfish are soft sea animals with jellylike bodies, no bones, and trailing tentacles. They drift through oceans around the world and use stinging cells to catch tiny prey.

Learn 10 Jellyfish facts for kids →

King penguins are tall penguins with orange patches on the head and chest. They breed on subantarctic islands, gather in huge colonies, dive for fish and squid, and raise fluffy brown chicks during a long breeding cycle.

Learn 10 King Penguin facts for kids →

Krill are tiny shrimplike crustaceans that live in the ocean, often in huge groups. They may be small, but they are one of the most important foods for whales, seals, penguins, fish, squid, and many other marine animals.

Learn 10 Krill facts for kids →

Leafy sea dragons are amazing ocean fish that look like drifting seaweed. They have leafy body parts, long snouts, tiny fins, and beautiful camouflage that helps them hide among seagrass and kelp along southern Australia.

Learn 10 Leafy Sea Dragon facts for kids →

Leatherback sea turtles are the largest sea turtles and the only sea turtles without a hard shell. They have a flexible leathery carapace, huge front flippers, and travel across oceans to find jellyfish and nesting beaches.

Learn 10 Leatherback Sea Turtle facts for kids →

Lionfish are beautiful but venomous reef fish with bold stripes, long fin spines, and wide fan-like pectoral fins. They are native to Indo-Pacific waters, but some species have become invasive in the western Atlantic, Caribbean, and Gulf of Mexico.

Learn 10 Lionfish facts for kids →

Little blue penguins, also called little penguins or kororā, are the world’s smallest penguins. They have blue-gray backs, white bellies, and coastal lives where they swim for fish by day and often return to shore after dark.

Learn 10 Little Blue Penguin facts for kids →

Lobsters are hard-shelled crustaceans that live mostly on the sea floor. Many true lobsters have large claws, long antennae, walking legs, strong tails, and a tough outer shell that they must molt as they grow.

Learn 10 Lobster facts for kids →

Loggerhead sea turtles are ocean reptiles named for their large heads and strong jaws. They use those jaws to crush hard-shelled prey such as whelks, conchs, crabs, and other seafloor animals.

Learn 10 Loggerhead Sea Turtle facts for kids →

Mahi-mahi are bright open-ocean fish also called dolphinfish or dorado, but they are fish, not dolphins. They are famous for electric blue-green backs, golden sides, fast growth, and strong swimming near the ocean surface.

Learn 10 Mahi-Mahi facts for kids →

Manatees are gentle aquatic mammals often called sea cows. They have round bodies, paddle-shaped tails, flippers, whiskery faces, and big lips that help them eat aquatic plants.

Learn 10 Manatee facts for kids →

Mandarin fish, also called mandarinfish, are tiny jewel-colored reef fish from the Pacific. They are dragonets, not true gobies, and they move slowly among coral rubble while looking for tiny animals to eat.

Learn 10 Mandarin Fish facts for kids →

Manta rays are graceful ocean fish related to sharks and rays. They glide through warm waters using giant wing-like fins and filter tiny plankton and small animals from the water.

Learn 10 Manta Ray facts for kids →

Mantis shrimp are colorful marine crustaceans known for amazing eyes and super-fast hunting arms. Some use club-like arms to smash prey, while others use sharp spear-like arms to grab fish and other small ocean animals.

Learn 10 Mantis Shrimp facts for kids →

Marine iguanas are unusual reptiles from the Galapagos Islands. They are the only modern lizards that regularly forage in the sea, where they swim and dive to eat algae growing on rocks.

Learn 10 Marine Iguana facts for kids →

Marlins are large open-ocean billfish with long spear-like bills, strong bodies, and powerful swimming skills. Different marlin species include blue, black, striped, and white marlins, and many are famous ocean predators.

Learn 10 Marlin facts for kids →

Moon jellies are pale translucent jellyfish often seen in coastal waters. They have soft bell-shaped bodies, short tentacles, four petal-like shapes inside, and a gentle pulsing swim that looks like a floating moon.

Learn 10 Moon Jelly facts for kids →

Moray eels are long, snake-like fish that live in warm ocean reefs and rocky hiding places. They have sharp teeth, strong jaws, smooth mucus-covered skin, and a secret second set of jaws in the throat that helps pull food down.

Learn 10 Moray Eel facts for kids →

Mussels are bivalve mollusks with two shells and soft bodies inside. Some live in the ocean attached to rocks by strong threads, while freshwater mussels often live partly buried in river or lake bottoms.

Learn 10 Mussel facts for kids →

Narwhals are small Arctic whales famous for their long spiral tusks. They are sometimes called unicorns of the sea, but the tusk is not a horn. It is actually a special tooth.

Learn 10 Narwhal facts for kids →

Nautiluses are ancient-looking ocean animals with soft bodies, many tentacles, and beautiful spiral shells divided into chambers. They are cephalopod mollusks, which means they are related to octopuses, squid, and cuttlefish.

Learn 10 Nautilus facts for kids →

Nudibranchs are colorful sea slugs that live in oceans around the world. They are soft-bodied marine mollusks, often without shells as adults, and many use bright colors, strange shapes, gills, cerata, and chemical defenses to survive.

Learn 10 Nudibranch facts for kids →

Nurse sharks are slow-moving sharks that often rest on the ocean bottom during the day and hunt at night. They have rounded heads, small mouths, barbels near the nose, and strong suction feeding skills.

Learn 10 Nurse Shark facts for kids →

Ocean sunfish, also called mola mola, are huge flat ocean fish that look a little like a giant swimming head. They are among the largest bony fish and can be seen basking near the surface in warm and temperate seas.

Learn 10 Ocean Sunfish facts for kids →

Octopuses are clever sea animals with soft bodies, eight arms, strong suckers, large eyes, and amazing camouflage. They are mollusks, not fish, and many can squirt ink to confuse predators.

Learn 10 Octopus facts for kids →

Orcas, also called killer whales, are powerful ocean mammals with black-and-white bodies, strong fins, sharp teeth, and close family groups called pods. Even though people call them whales, orcas are actually the largest members of the dolphin family.

Learn 10 Orca facts for kids →

Oysters are ocean mollusks with two shells called valves. Many oysters live attached to hard surfaces, filter tiny food from seawater, and can build rough reefs that shelter small ocean animals.

Learn 10 Oyster facts for kids →

Parrotfish are colorful reef fish named for their parrot-like beaks. They use strong fused teeth to scrape algae and tiny foods from reef surfaces, helping keep coral reefs cleaner and full of life.

Learn 10 Parrotfish facts for kids →

Penguins are flightless birds that are excellent swimmers. They have flipper-like wings, waterproof feathers, webbed feet, and strong bodies built for ocean life. Most penguins live in the Southern Hemisphere.

Learn 10 Penguin facts for kids →

Porcupinefish are broad-bodied ocean fish covered with spines. When threatened, many can puff up by taking in water, making the spines stand out and turning the fish into a round, prickly ball that is hard to swallow.

Learn 10 Porcupinefish facts for kids →

The Portuguese man o' war looks like a jellyfish, but it is actually a siphonophore, a floating colony of specialized parts working together. It has a blue or purple gas-filled float and long stinging tentacles that drift below.

Learn 10 Portuguese Man o' War facts for kids →

Pufferfish are unusual fish famous for puffing their bodies into round balloon shapes when threatened. Many have tough skin, small fins, strong beak-like teeth, and powerful toxins that help protect them from predators.

Learn 10 Pufferfish facts for kids →

Puffins are small seabirds with black-and-white feathers, orange feet, and bright colorful beaks during breeding season. They nest in colonies on cliffs and islands and dive underwater to catch fish.

Learn 10 Puffin facts for kids →

Reef shark is a common name for several shark species that live around coral reefs, including blacktip reef sharks, whitetip reef sharks, grey reef sharks, and Caribbean reef sharks. These sharks help reef food webs stay balanced and need healthy reefs to survive.

Learn 10 Reef Shark facts for kids →

Rockhopper penguins are small crested penguins with bright yellow eyebrow feathers, red eyes, and big attitudes. They live in noisy colonies on rocky islands and hop over rocks instead of waddling smoothly like some penguins.

Learn 10 Rockhopper Penguin facts for kids →

Sailfish are fast open-ocean fish named for the huge sail-like dorsal fin on their backs. They have long bills, sleek bodies, blue stripes, and quick hunting skills that help them chase small fish and squid near the ocean surface.

Learn 10 Sailfish facts for kids →

Sand dollars are flat ocean animals related to sea urchins and sea stars. Living sand dollars are covered with tiny spines and move slowly through sandy seafloors, while the pale “sand dollars” found on beaches are usually their dried skeletons.

Learn 10 Sand Dollar facts for kids →

Scallops are bivalve mollusks that make fan-shaped shells. Unlike many other bivalves, some scallops can swim by clapping their shells together and pushing water out in quick jets.

Learn 10 Scallop facts for kids →

Sea anemones are soft ocean animals that look like colorful underwater flowers. They belong to the cnidarian group and use tentacles with tiny stinging structures to catch food, so they should be watched gently and not touched.

Learn 10 Sea Anemone facts for kids →

Sea cucumbers are soft, tube-shaped marine animals that crawl along the sea floor. They are echinoderms, related to sea stars and sea urchins, and many help recycle nutrients by eating tiny food bits mixed with sand or mud.

Learn 10 Sea Cucumber facts for kids →

Sea hares are soft marine mollusks that look like chunky sea slugs with rabbit-ear-like tentacles. They often eat seaweed, crawl along shallow ocean bottoms, and some can release purple or reddish ink when bothered.

Learn 10 Sea Hare facts for kids →

Sea kraits are venomous sea snakes that split life between ocean and land. They hunt in coral reefs and coastal waters, but unlike fully ocean-living sea snakes, sea kraits return to land to rest, digest food, shed skin, mate, and lay eggs.

Learn 10 Sea Krait facts for kids →

Sea lions are lively marine mammals with strong front flippers, small visible ear flaps, loud barks, and playful swimming skills. They are related to seals and walruses, but they move on land differently from true seals.

Learn 10 Sea Lion facts for kids →

Sea otters are playful-looking marine mammals that live along northern Pacific coasts. They float on their backs, use rocks as tools, have super dense fur, and help keep kelp forests healthy by eating sea urchins.

Learn 10 Sea Otter facts for kids →

Sea snakes are marine reptiles that live in warm ocean waters. They are related to cobras, have venom, breathe air at the surface, and many have flattened paddle-like tails that help them swim through reefs, lagoons, and coastal seas.

Learn 10 Sea Snake facts for kids →

Sea sponges are simple marine animals that live attached to rocks, reefs, shells, or the sea floor. They have many tiny pores, no brain like ours, and a clever filter-feeding system that moves water through the body to catch tiny food particles.

Learn 10 Sea Sponge facts for kids →

Sea turtles are ocean reptiles with shells, flippers, lungs, and long life cycles. They live in the world’s oceans and come onto beaches to lay eggs in sandy nests.

Learn 10 Sea Turtle facts for kids →

Sea urchins are round, spiky marine animals that live on the ocean floor. They are echinoderms, which means they are related to sea stars and sand dollars, and they use tiny tube feet, spines, and a special mouth structure to move and eat.

Learn 10 Sea Urchin facts for kids →

Seagulls are usually called gulls by scientists. They are clever, noisy seabirds with webbed feet, strong wings, loud calls, and flexible diets that help them live near oceans, lakes, rivers, cities, and harbors.

Learn 10 Seagull facts for kids →

Seahorses are small ocean fish with horse-shaped heads, curled tails, bony body rings, and tiny mouths. They live in shallow coastal waters such as seagrass beds, coral reefs, mangroves, and estuaries.

Learn 10 Seahorse facts for kids →

Seals are marine mammals with smooth bodies, flippers, whiskers, and thick blubber. They spend lots of time in water, but they also come onto land or ice to rest, warm up, and raise their pups.

Learn 10 Seal facts for kids →

Shrimp are small crustaceans that live in oceans, rivers, lakes, estuaries, and muddy or sandy bottoms depending on species. They have long antennae, many legs, hard outer shells, gills, and a quick backward-swimming escape move.

Learn 10 Shrimp facts for kids →

Squid are fast ocean mollusks in the cephalopod group. They have soft bodies, big eyes, eight arms, two longer tentacles, a beak, and a siphon that helps them jet through the water like tiny sea rockets.

Learn 10 Squid facts for kids →

Starfish are better called sea stars because they are not fish. They are marine invertebrates related to sea urchins and sand dollars, with arms, tube feet, spiny skin, and amazing ways to move, eat, and regrow body parts.

Learn 10 Starfish facts for kids →

Stingrays are flat ocean fish related to sharks. They glide over sandy seafloors with wing-like fins, breathe through gills, and many have a sharp tail barb used for defense when they feel threatened.

Learn 10 Stingray facts for kids →

Stonefish are thick, bumpy fish that rest on the seafloor and blend in with rocks, coral rubble, or sand. They are famous for powerful venomous spines, so people should never touch or step on them and should use caution in stonefish areas.

Learn 10 Stonefish facts for kids →

Swordfish are large ocean fish named for the long, flat sword-like bill that sticks out from the front of the head. They are powerful swimmers found in warm and temperate oceans, where they hunt fish and squid.

Learn 10 Swordfish facts for kids →

Terns are graceful seabirds with narrow wings, forked tails, and sharp bills. Many terns fly over oceans, lakes, rivers, and coasts, then plunge toward the water to catch small fish and other prey.

Learn 10 Tern facts for kids →

Tiger sharks are large ocean sharks named for the dark stripes seen most clearly on young sharks. They are powerful predators and scavengers with sharp serrated teeth, strong senses, and a very wide menu, but people should always admire wild sharks from a safe distance.

Learn 10 Tiger Shark facts for kids →

Triggerfish are strong reef fish with deep bodies, small mouths, tough scales, and clever locking spines. They live around reefs and rocky areas, where many feed on hard-shelled animals, sea urchins, crustaceans, and other reef foods.

Learn 10 Triggerfish facts for kids →

Vampire squid are deep-sea cephalopods with dark bodies, glowing arm tips, big eyes, and webbing between the arms that looks like a little cape. Despite the spooky name, they do not drink blood and mostly feed on drifting ocean particles called marine snow.

Learn 10 Vampire Squid facts for kids →

Walruses are huge Arctic marine mammals with long tusks, thick blubber, wrinkly skin, stiff whiskers, and flippers. They spend time in cold seas and haul out on ice or beaches to rest.

Learn 10 Walrus facts for kids →

Weedy sea dragons are delicate fish from southern Australian waters. They look like drifting seaweed, with long snouts, leafy-looking body parts, bony plates, and gentle slow swimming that helps them hide among kelp and seagrass.

Learn 10 Weedy Sea Dragon facts for kids →

Whale sharks are gentle ocean giants and the largest fish in the world. Even though their name includes “whale,” they are sharks, not whales. They swim with wide mouths to filter tiny food from seawater.

Learn 10 Whale Shark facts for kids →

Wrasses are a large group of colorful marine fish often found on coral reefs and rocky reefs. Many wrasses have thick lips, strong front teeth, bright patterns, and busy reef lives full of hunting, cleaning, hiding, and quick swimming.

Learn 10 Wrasse facts for kids →

Yellow-eyed penguins, also called hoiho, are rare penguins from New Zealand. They have pale yellow eyes, a yellow band of feathers around the head, shy nesting habits, and a conservation story that needs careful protection.

Learn 10 Yellow-Eyed Penguin facts for kids →