Do you know how to survive in sea? Water is the main issue for survival. It depends on the warmth, which is responsible for water loss from sweating.On the way in query, there are recurrent squalls most of the year, so might have rain for every few days. Blood from birds and turtles is a good supply of water 70 percent water.Drinking your own urine is not suggested as you are re-ingesting the salt your kidneys are trying to get rid of. What I am telling about? It is a tale about survival. Survival at sea. Learn survival tricks.