Dolphins survive in many ways but be specific. Do you mean how they survive from prey or survive in sleep? Dolphins survive from prey by pretending they are dead, or they can swim in schools. Dolphins survive in the water by turning half there brain of when they sleep so they can still see out of one eye.
wht does a dolphin need in its habitat
Dolphins are intelligent to protect themselves from predators and need to be aware of their environment to survive as a species.
Without water, any dolphins will not survive.
nothing
Dolphins can't survive on land.
maybe because if there were other dolphins that went to their habitat then they mit not survive
nothing
heterotroph
Dolphins hide from sharks and dolphins can also sense danger.
fish or squid
Dolphins must go to the surface, because they breathe air. Dolphins are mammals, not fish.
Pink dolphins need water because they are dolphins.