Lobsters are a delicacy, but that wasn't always the case. In the past, poor people, prisoners and slaves were dining on lobster meat. Also used as fertilizer because it was so abundant.
Nowadays it's a multi million dollar business. In March of 2019, Costco in the U.S. sold enormous lobster claws.
Lobsters have 10 legs and the first three pairs have claws, which they use for feeding and for battle. The first pair are significantly larger. How do they grow and how old can they become?
Lobsters must mould to grow. For lobsters to become legal to keep in the U.S., their carapaces or body shells, must be between 3.25 and 5 inches (8 and 12.5 cm) and a minimum weight of 1 - 1.25 lb (450 - 550 grams).
Egg bearing female lobsters are also illegal to keep. Fishermen will usually cut a v-shaped notch in the tail to protect this lobster, and releases it for producing offspring in years to come.
In order to reach the minimum size, the lobsters have moulded numerous times and are approximately 7 years old. At this age they'll moult once a year, adding 0.25lb (100 gram) to their weight on average. When they get older, the frequency of moulding diminishes, often skipping years. It takes more and more energy for the lobster to grow in size, and the effort kills around 10 to 15 % yearly for lobsters aged 30 to 50.
The largest lobster captured was in 1926, was 51.5 lb (23 kg), and estimated to be more than 100 years old. The one caught in 1977, with a weight of 44 lb (20 kg), also estimated above 100 years old. Because there was no reliable way to determine the age of lobsters back then, only estimates could be given related to age. Nowadays scientists have discovered the eyestalks and the gastric mills don't mold, so a more accurate assessment can be made. Nonetheless, giants like these will more often than not be released back into the wild to live out the rest of its life.