Fishes have many diverse forms, shapes, and features. We're putting the spotlight on just one example. Meet the ocean sunfish.

The Greenland shark (Somniosus microcephalus) is one of nature's oddballs, with poisonous flesh, a huge lifespan, and a very harsh habitat.

The vaquita (Phocoena sinus) is critically endangered with less than 10 left. Read on to learn more about these amazing creatures.