Pinnipeds are found all over the world, and there are 33 known species of them. 19 are seal species. This is due to the fact that they have winged feet. Depending on the species of seal, there is quite a difference from the sizes. The largest ones can be about 16 feet long with the smallest of them being about four feet long. The terminology for seals includes males being called bulls, females being called cows, and the offspring being called pups.