Seal vs Sea Lion for Kids
Seals and sea lions are both fin-footed marine mammals called pinnipeds, but they belong to different families. In this comparison, seal means a true or earless seal. True seals have ear holes without visible flaps and move over land with a wriggling belly motion. Sea lions have small external ear flaps and can rotate their hind flippers beneath their bodies to walk.
Seal
- Type: Mammal
- Group: True Seal
- Known for: Ear holes, short front flippers, quiet calls, and powerful rear-flipper swimming
- Diet: Carnivore
- Special skill: Propelling through water with the hind flippers and making deep dives
Sea Lion
- Type: Mammal
- Group: Eared Seal
- Known for: Visible ear flaps, loud barking, long front flippers, and walking on land
- Diet: Carnivore
- Special skill: Rotating the hind flippers forward to walk and swimming with large front flippers
Quick Answer
Quick answer: True seals have ear holes without visible flaps, small front flippers, and hind flippers that point backward, so they wriggle on land. Sea lions have visible ear flaps, long front flippers, and hind flippers that rotate underneath the body, allowing them to walk on all fours.
Seal vs Sea Lion: Quick Comparison
| Feature | Seal | Sea Lion |
|---|---|---|
| Animal type | Mammal | Mammal |
| Animal group | True seal or phocid | Eared seal or otariid |
| Known for | Ear holes, quiet calls, and rear-flipper swimming | Ear flaps, barking, and front-flipper swimming |
| Main habitat | Oceans, coasts, beaches, sea ice, and offshore waters | Coastal waters, rocky shores, beaches, islands, and docks |
| Where found | Oceans worldwide | Coasts around the Pacific and Southern Hemisphere regions |
| Diet | Carnivore | Carnivore |
| Baby name | Pup | Pup |
| Ears | Small ear openings with no outer flaps | Small visible external ear flaps |
| Movement on land | Wriggles or scoots on the belly | Walks using all four flippers |
| Swimming power | Mainly uses the hind flippers | Mainly uses the long front flippers |
How Are Seals and Sea Lions Alike?
- Both seals and sea lions are mammals called pinnipeds.
- Both breathe air with lungs and must surface to breathe.
- Both have streamlined bodies, flippers, whiskers, and thick layers of fat called blubber.
- Both eat fish, squid, crustaceans, and other marine animals.
- Both have babies called pups, and mothers feed their pups milk.
How Are Seals and Sea Lions Different?
- True seals have ear holes without outer flaps, while sea lions have small visible ear flaps.
- Seals have shorter front flippers, while sea lions have long, powerful front flippers.
- Seals cannot rotate their hind flippers beneath the body, while sea lions can use theirs to walk on land.
- Seals mainly swim with their hind flippers, while sea lions mainly propel themselves with their front flippers.
- True seals are often quieter and more solitary, while sea lions are usually more social and famous for loud barks.
Seal vs Sea Lion Showdown
Marine mammal showdown: The seal wins for maximum size because elephant seals are the largest pinnipeds, and it also takes the strength, quiet-stealth, and weirdest-movement rounds. The sea lion wins for speed and agility on land and for noisy social life in large colonies. Swimming is a tie because both are superb swimmers, but seals power themselves mostly with their hind flippers while sea lions use their long front flippers.
Fun Seal vs Sea Lion Facts
Ear Holes vs Ear Flaps
True seals have small ear openings on the sides of their heads but no visible outer ear flaps. Sea lions have small external ear flaps, making the ears the quickest clue when the animals are resting nearby.
Short Flippers vs Long Flippers
Seals have short front flippers with claws, while sea lions have much longer front flippers. Sea lions sweep these large flippers through the water for power, while seals rely more heavily on their hind flippers.
Wriggling vs Walking
A true seal cannot rotate its hind flippers underneath its body, so it moves on land by wriggling, bouncing, or scooting on its belly. A sea lion can turn its hind flippers forward and walk on all fours.
They Swim in Different Ways
Seals sweep their hind flippers from side to side and use the front flippers mainly for steering. Sea lions create most of their swimming power with strong strokes of their long front flippers and steer with the rear pair.
Quiet Grunts vs Loud Barks
True seals often communicate with grunts, growls, hisses, and other calls, though some species can be very loud. Sea lions are famous for repeated barks and noisy colonies packed with calling animals.
Seal vs Sea Lion Quiz
- Which animal has visible outer ear flaps? Answer: Sea lion.
- Which animal usually wriggles on its belly on land? Answer: Seal.
- What are baby seals and sea lions called? Answer: Pups.
- Which animal uses long front flippers for most of its swimming power? Answer: Sea lion.
- Are seals and sea lions both mammals? Answer: Yes.
Seal vs Sea Lion FAQ
What is the easiest way to tell a seal from a sea lion?
Look at the ears. True seals have small ear holes without visible flaps, while sea lions have small external ear flaps.
Which animal can walk on land?
Sea lions can rotate their hind flippers beneath their bodies and walk on all fours. True seals usually wriggle or scoot across land.
Which is bigger, a seal or a sea lion?
Size varies by species. Many sea lions are larger than common seals, but elephant seals are much larger than any sea lion.
Do seals and sea lions both bark?
Sea lions are especially famous for loud barks. True seals are often quieter and may grunt, growl, hiss, or make other sounds, though some species can be very noisy.
Are sea lions a kind of seal?
In the broad pinniped sense, sea lions belong to the seal group. In everyday comparisons, the word seal usually means a true or earless seal from the family Phocidae.
Animal Words to Know
- Pinniped: A fin-footed marine mammal such as a seal, sea lion, or walrus.
- Phocid: A true or earless seal.
- Otariid: An eared seal, including sea lions and fur seals.
- Blubber: A thick layer of fat that stores energy and helps keep a marine mammal warm.
- Rookery: A place where many marine mammals or birds gather to breed.
Seal and Sea Lion Drawing Activity
Seal and Sea Lion Drawing Activity
Draw a round-bodied seal on one side with ear holes, short front flippers, and hind flippers pointing backward. Draw an upright sea lion on the other side with visible ear flaps, long front flippers, and hind flippers beneath its body. Add arrows showing wriggling, walking, and the different swimming strokes.
Meet Each Animal
Want the full fact file? Here are quick highlights from each animal’s own facts page.
Seal Fact Highlight
From the full animal facts pageSea Lion Fact Highlight
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