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Lobsters are invertebrates with a hard protective exoskeleton. [5] Like most arthropods, lobsters must shed to grow, which leaves them vulnerable. During the shedding process, several species change color. Lobsters have eight walking legs; the front three pairs bear claws, the first of which are larger than the others.
- Lobsters are Invertebrates. Lobsters are marine invertebrates, the group of animals without a notochord (a rigid, cartilaginous spinal structure). Like many invertebrates lacking a "backbone," lobsters are protected by a hard exoskeleton that provides structure to their bodies.
- Not All Lobsters Have Claws. There are two kinds of lobsters: clawed lobsters and spiny lobsters (or rock lobsters). Clawed lobsters are generally found in cold marine waters and include the American lobster, a popular variety served at seafood restaurants, especially in New England.
- Lobsters Prefer Live Food. Although they have a reputation for being scavengers and even cannibals, studies of wild lobsters show that they prefer live prey.
- Lobsters Can Live a Long Time. While it takes an American lobster six to eight years to reach a market weight of one pound, that's just the beginning. Lobsters are long-lived creatures, with estimated lifespans of more than 100 years.
Sep 8, 2024 · Lobsters scavenge for dead animals but also eat live fish, small mollusks and other bottom-dwelling invertebrates, and seaweed. Some species, especially of true and spiny lobsters, are commercially important to humans as food.
- The Editors of Encyclopaedia Britannica
- Females Shed Their Shell to Mate
- Reflex Amputation
- Gastric Mill
One unique part of lobster reproduction is that a female must lose her carapace (hard outer-shell) before she can mate. When she is without her shell the female is at greater risk from predation so during this time a female will live inside a cave with the male who offers her protection. After they have mated the female stays with the male until he...
One cool adaptation that lobsters have is the ability to discard and regrow limbs! This ability to discard a limb is called autotomy or self-amputation and it is a self-defense mechanism that these lobsters use to escape from predators by either escaping their grasp or diverting their attention. This mechanism can be lifesaving! It’s not just their...
A lobster’s teeth are located in its stomach! These teeth are part of a system called the gastric mill which crushes food so that it is ready for further digestion. Lobsters swallow their food whole and the three teeth in their stomach act like grinders, enabling the stomach to do the chewing. It is not only lobsters that use this method to break d...
- Malacostraca
- Arthropoda
- Decapoda
- Lobsters Are More Closely Related to Insects Than Fish. Lobsters are invertebrates, which means they don't have a backbone. Their exoskeleton supports their body from the outside, like insects, which they are more closely related to.
- Lobsters Live a Long Time. Lobsters have much longer lifespans than most crustaceans. A study of European lobsters found that the average lobster lifespan was 31 years for males and 54 years for females.
- They Have Many Predators. Humans are far from the lobster's only predator. Seals like to eat lobster, as do cod, striped bass, and other fish. Eels are capable of slithering inside the rock crevices where lobsters like to hide.
- They Can Be Cannibalistic. When there is a high density of lobsters and not very many predators, lobsters will eat each other. This phenomenon has been observed in the Gulf of Maine, where overfishing (which reduces lobster predators like cod and halibut) has created a perfect environment for lobster cannibalism.
Lobsters almost certainly can't sense sounds in the way that we do, since they don't have any sense organ that behaves like our ears. They do detect vibrations, though. They also produce low frequency vibrations themselves by contracting and relaxing special muscles at the base of their antennae.
Invertebrates such as lobsters and insects do not have complex brains like vertebrates such as fish, birds, reptiles, or mammals do. Instead, lobsters contain 15 nerve clusters called ganglia dispersed throughout their bodies, with a main ganglion located between their eyes.
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