a man can not survive for a week without water
Not for very long. People cannot survive for very long without water, anywhere.
A plant can survive without water, but not for very long. Humans can survive a day or two without water, but like all life, to have a long life we need water.
A Long Time
They are water based animals so can survive under water for approximately 60 minutes, but without water 3.7 seconds
One adaptation of a manatee is that they have sharp senses. They also can swim fast and feed on many plants in the water.
A human can only survive 1 week without water, and 2 weeks without food
about a week
1 week
About a week.
2 weeks
2 weeks