When the eggs hatch, the larvae will float near the surface for 4 to 6 weeks. The few that survive will settle to the bottom and continue to develop as baby lobsters. From every 50,000 eggs only 2 lobsters are expected to survive to legal size. It takes 5 to 7 years for a lobster to grow to legal size in the ocean. A lobster at legal size will weigh approximately 1 pound.
Lobsters grow by molting.
This is the process in which they struggle out of their old shells while simultaneously absorbing water which expands their body size. Following this cycle, the lobster will weigh approximately one pound and reach minimum legal size. No one has yet found a way to determine the exact age of a lobster. However, based on scientific knowledge of body size at age, the maximum age attained may approach 100 years. They can grow to be 3 feet or more in overall body length.