How do bottle nose dolphins contribute to biodiversity?

A niche is essentially when, where, and how the animal lives. A Bottle-nose dolphin lives near the top of the food-chain, although it still has some predators, such as the great white shark. It's territory is the ocean- it lives in many different areas, so you can look up its habitat. The dolphin feeds off of schools of fish, and sometimes squid. Some species of dolphins also migrate, depending on the location of the animal.