The difference between seals and sea lions is the head, body, and limbs.
1. Head
There is a significant difference between seals and sea lions in their heads. Seals do not have external auricles. There is a hole in the position of the ear. This is the seal's ear. In addition, the seal's head is more rounded from the front, its neck is relatively thick, and there are long tentacles above its eyes.
The head of a sea lion is obviously more slender than that of a seal, and there are no "eyebrows" like a seal above the eyes. The sides of the sea lion's head are not like two ear holes like a seal, but have obvious ear holes. Although the outer ears are not big, you can see at a glance that they are protruding, not concave like seals.
2. Body shape
The standard body shape of a seal - a short and thick neck, a spindle-shaped body, very fat and cute. Moreover, seals are limited by their skeletal shape and structure and cannot stand up their front bodies. They can only raise their heads and look around like the picture below, which is quite clumsy.
Sea lions have a slender body, a neck, and can support their upper body with their forelimbs, making them a flexible fat man. The ones in zoos and aquariums that can head balls, clap, and play trumpets are all sea lions, because the body structure of seals does not allow them to perform such difficult and complex movements.
3. Limbs
There are also huge differences in the shape of the limbs of seals and sea lions. The limbs of a seal are, in one word, short. Seals are better at swimming in water and less able to move on land. Moreover, seals are more ferocious predators than sea lions. Their forelimbs are not too finned, and the front ends still have sharp claws protruding beyond the flippers, and the hind limbs are also obviously flattened and toe-shaped.
The limbs of sea lions are more finned, longer and more flexible than seals. The forelimbs can be turned out 90 degrees and pressed on the ground to hold up the front half of the body, and the hind limbs can also be bent inward. Stepping on the ground with a splayed figure, it can crawl forward by paddling its forelimbs, hitting the ground with its hind legs and swaying its body. After training, it can become more flexible, such as performing ladder climbing, handstand and other events.