4. Hard Shell Versus Soft Shell Lobsters
Because lobsters continue to grow, once a year they have to climb out of their hard shells to form a new larger version. This is called molting. The new water saturated soft shell can take months to harden again, making them vulnerable to other sea life but very tasty to some human lobster connoisseurs.
It takes months for the lobster to grow into its new shell so if you break open a cooked new shell lobster, you'll notice there is less meat in there compared to an older hard shell lobster.