Lobsters are generally not deaf, but with minimal ability to hear sound. Lobsters are sensitive and delicate animals, although they can’t hear or see very well.
There are many myths about lobsters but most questions asked are around how you can prepare them when it comes to cooking. Some people say lobsters have poisons sac, some said dead lobsters release toxins therefore you need to boil them alive. As a vegetarian myself, I never have to prepare meat despite killing them while preparing.
It sounds cruel but when it comes to cooking and preparing, lobsters have to be alive when you cook them. Cooking dead lobsters or eating dead lobsters can cause harm to your health. The reason why we need to boil lobsters alive is because lobsters and other shellfish have harmful bacteria naturally present in their flesh. Once the lobster is dead the bacteria will multiply rapidly and release toxins that cannot be destroyed by cooking.
Others were saying that lobsters scream when boiled alive. Scientists have proved that lobsters are voiceless however, they are unique creatures who have caring social bonds, and they feel pain well as anxiety. The most visible sign of lobsters in pain is they twitch their tails which evolve as an escape reflex. They are immortal but definitely not deaf.