How does a lobster grow An adult female lobster will produce approximately 10,000 eggs when she is fertile. Each egg is the size of the head of a pin. As they grow, the eggs are held under the mothers tail with a special glue-like substance. The female will carry her eggs for almost a year. Then the eggs are released as larvae.
Lobsters grow by molting, or shedding their shells.
Just after they molt, they are soft and fragile until their new shell has hardened. During this time, the lobster buries itself in the mud to hide from its natural enemies. When they are young, an immature lobster will molt several times each year. At this age, they molt just once a year, usually during the summer months. When lobsters get older, they will often skip years, and molt less frequently.