Disneynature descends into the ocean to play with dolphins, one of the world's most fascinating animals. There are times when Echo can't quite decide whether it's time to grow up and take on new duties, or whether it's time for him to just let loose and enjoy the ride. Every member of Echo and his family's coral reef community has a role to play in ensuring the reef's long-term stability. There are so many creatures in the ocean that Echo has difficulty avoiding the temptation of feeding them and getting up close and personal with the creatures.