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.
about 25 years
About 30 years.
dolphins need to stay with there mothers for about years.
They need to stay alive to support the organism
Oxygen is needed to stay alive. Without it you suffocate.
The four thing you need to stay alive are: Oxygen, water, Food, and Air
alive
Dolphins are mammels so they can stay out of the water for their whole life but they still have to eat and drink . PS:Francely Rodriguez wrote this.
Enviorment
To stay alive
they need a lot of energy
Dolphins and whales are endangered because of natural threats like sharks and bigger whales and human thearts like fishing and polution and hunting so stop hunting and protect the dolphins they will stay alive!