Why does raw lobster turn black?

Chef's answer
Answer: When many lobsters turn black during/after cooking, I tend to think that they were improperly cooked. When the internal temperature during cooking doesn't reach a certain level, the enzyme 'phenoloxidase' can get activated, resulting in the deposition of melanin, or black pigment.
Frequently asked Questions 🎓
As bananas ripen, their skin starts to change color from yellow to brown and finally to black. Yellow and brown bananas are safe to eat. But when bananas become black, it is an indication of rot.
A: Black spots on the shells of crustaceans are typically composed of melanin, which is the end product of a series of immunological reactions. This means the crab was likely responding to some shell damage that could be caused by physical trauma or a disease agent.11 Dec 2014
Crab blood can turn blue/black soon after being cooked if not at a full boil long enough, first in body meat and follows veins down into leg meat. ... This happens rather quickly as crab don't "travel well" and need oxygen and cold (not freezing) temperatures between catching and cooking.5 Sep 2014
It's crab leeches although unattractive to the eye, any such egg cases observed on cooked crabs pose no known public health risks to consumers and do not affect the health, quality, or taste of the crab meat.
Registered. Pepper Spot Disease is caused when a crab becomes infected with a parasite, and then that parasite becomes infected by another parasite (called a hyperparasite.) The disease is easily seen as tiny black specks (approximately 0.5mm in diameter) which are visible throughout the cras tissues.20 Sep 2015
A: Black spots on the shells of crustaceans are typically composed of melanin, which is the end product of a series of immunological reactions. This means the crab was likely responding to some shell damage that could be caused by physical trauma or a disease agent.11 Dec 2014
What is the black stuff inside lobster tail? The roe will be black and will appear gelatin-like if your lobster is under-cooked. It is edible but can also be rinsed out.
A few more cooking questions 📍