The sea lion is a mammal that lives in the ocean. They get the name "sea lion" because they have many similarities with lions on land. In particular, male sea lions are more similar to lions.
From the appearance characteristics, the head of the sea lion is more like a lion. Especially male sea lions, when they grow up, their necks and shoulders will produce some relatively hard hair, and very thick, this characteristic is especially similar to lions. In terms of color, sea lions are dark brown, which is similar to lions. Moreover, from the point of view of calls, sometimes sea lions will make calls similar to the lion's "Ouch", and sometimes the sound is loud and thick, which is similar to the lion.
As mentioned above, sea lions are similar to lions in appearance, characteristics, calls, and so on, so they got their name. Similarity in these respects is their relationship. In terms of categories, the relationship between sea lions and lions is that both belong to mammals and carnivores, both are mammals in terms of large categories and carnivores in terms of feeding habits. However, sea lions and lions are not particularly closely related. Among them, the sea lion is a pinniped suborder, sea lion family animals, while the lion is a split foot suborder, cat family animals, and there is no close relationship.
Actually, there is a big difference between the two. Their living environment is very different, sea lions live in the water, while lions live on land. Their habits and physical structure are very different. From these differences, the two are not too close, but there are some similarities.