Happy birthday to Fathom who turns 3 years old today! Fathom is a zebra shark, though they are sometimes called leopard sharks. That's because they are striped when they are young but spotted as adults. In the wild, zebra sharks are mostly nocturnal feeders, and their favorite food is mollusks. They can be found in shallow, sandy areas and coral reefs in India and Indonesia. However, due to threats like fishing, habitat degradation and climate change, zebra sharks are listed as Endangered on the