about 2-3 years
yes dolphins can stay up long because they are like mamals
dolphins need to stay with there mothers for about years.
about a year and a half
To keep their species going.
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about 25 years
Dolphins can stay with their mothers for a few months or they will stay with them for a few years, depending on how close it is to its mother.
Forever
If you mean how long can dolphin stay under water, it's about 20 minutes for a common bottlenose dolphin. I am not sure about other species of dolphins.
dolphins are mammels like us, they have babys and the babys nurse from the mothers.
about 4 years
Baby dolphins stay with their mother for 3-4 years.