How does a lobster grow?
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. This molting, or shell-shedding, occurs about
25 times in the first 5-7 years of life. Following this cycle, the
lobster will weigh approximately one pound and reach minimum legal
size. A lobster at minimum legal size may then only molt once per year
and increase about 15% in length and 40% in weight. 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.