What happens to the mother seals?

Sometimes she dies, usually in nets. But the main reason for early separation from the mother seal 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.)