Simplify the following text for a Grade 8 native English-speaking person.
Original: Species that can be found at the reef include whale sharks , manta rays , humpback whales , dugongs , and Potato Cod .
Simplified: Although most famed for its whale sharks which feed there during March to June , the reef is also rich in coral and other marine life . During the winter months , the reef is part of the migratory routes for dolphins , dugongs , manta rays and humpback whales .