from the depletion of fat reserves causing dehydration. seal fat - is not only protection from the cold on ice or in ice water, but also a source of energy and fluids for the body. seals do not drink. after a period of too little food, the body fat is used up, and also the seals drinking fluids. depleted animals have no strength to search for food, it gets sick from hypothermia, or an excessive number of parasites, which have become critical to the weakened organism. and dehydrated animal blood pressure falls, he falls into a coma and dies.
this is the result of too early separation from the female. the female feeds the baby an average of 5 weeks, after which the pup begins an independent life. he needs to build up enough normal fat reserves before he starts to hunt productively, that is, until he learns to eat fish. before fish ...s eat low-calorie, but slow and accessible crabs, sea crustaceans and molluscs. for the undernourished ... pup it is not enough food, and it quickly loses fat.
sometimes she dies, usually in nets. but the main reason for early separation from the mother ... are two things: people and the storms. people (including ships passing too close to the rookeries) scare animals on rookeries into panic, after which the mother loses her calves, so that she cannot find them by voice. a number of the pups wash away from the shore in a storm into the sea and end up on a different shore or island. (in some cases when a female becomes a mother for the first time she refuses to feed the child.)