This is a fantastic question. I am not sure why they say that the further north you go to larger the lobsters get, but I was once told by a snook biologist that fish species are at their largest in the most northern part of their range. I DO know that in Florida the bigger lobsters are usually out in the 40 to 60 foot depths.
There are also 12 species of lobster in Florida, with the Caribbean spiny lobster being the largest and most abundant. These large lobsters will spawn 2 to 3 times a year. One of the reasons larger lobsters are found in the 40 to 60 foot depths is because the mature lobsters migrate seaward. The Florida spiny lobster will grow over 15 pounds and can live 20 years. While I could not find the Florida record for spiny lobster, I did find that the largest spiny lobster was caught in Ventura, California by Tom Powers. It was over 3 feet and weighed over 26 pounds. Mr. Powers donated it to a California aquarium.
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