The difference between rock lobster and Maine lobster is primarily that rock lobsters (also known as spiny lobsters) only have meat within their tails while Maine lobsters (also known as North American lobsters or "true lobsters") have meat in their huge claws as well as their tails. Most lobster enthusiasts prefer to capture and eat Maine lobster due to the additional meat available.
Lobsters live in the waters along coasts because they prefer shallow water. Once they grow in size, they may venture out towards deeper water, but even then, most lobsters will stay within a 10 to 15 mile radius of the coast. The growth process for lobsters takes approximately 5 to 7 years. Lobsters must molt around 20 times throughout these years in order to expand their shells and grow. There is a taste difference in newer versus older lobsters. The newer lobsters tend to have a sweet and tender taste that some people prefer.
The North American lobster will mate as soon as the female as molted her shell and is in a soft-shell state. Then the lobster will lay eggs after carrying them for 9 to 12 months inside and then 9 to 12 months outside on the underside of her tail, reports the University of Maine. A female North American lobster can carry as many as 8,000 to 100,000 eggs. These eggs will then go through a larvae, post-larval and juvenile stage before reaching adulthood.