Below are a bunch of one-offs I've made for friends, family, or were originally intended to be part of a series but I opted for a different representative.
Odobenus rosmarus
These stately chonks are surprisingly not as big as the elephant seal, but I still wouldn't fight one. Both genders brandish massive tusks, which they use to smash holes in ice, fight polar bears, and flex for status. One of my favorite stories is of the taxidermied specimen in a London Museum. Upon recieving the carcass, the taxidermist (who'd never seen one in the wild) just kept filling it and filling it until the skin became smooth, resulting in a massive, overinflated walrus balloon.
Sphyrna tiburo
This mini-hammerheads are adorbs. Seeing them out snorkeling is always a treat. For one, they won't eat you. For another, they can also proactive parthenogenesis, or cloning themselves. Even in the ocean, dating can be a pain.