Crabs

Hermit crabs are nocturnal and have perfect vision in the dark

Yes there are, I caught 3 of them by hand yesterday that were crawling around in the water on cement blocks that were encrusted with oyster shells. They can be hard to spot because the shells on some of the crabs gets completely covered with algae.

becaus is awsome

.... I'll improve this horrific answer.

I'm assuming, first of all, that you know that the spider crab is in fact a crab. Spider crabs are crustaceans, part of the Superfamily Majoidea. They are scavengers, and several species are decorator crabs as well, meaning that they decorate their shells.

Tanks displays should be simple, a few rock formations, little algae, and a sandy floor.

However, I would discourage the keeping of the Japanese Spider Crab simply because of its size. Japanese spider crabs can grow from 4-10 feet in length (and not 16 feet, as the previous answerer suggested) and therefore do need a lot of room. Perhaps not quite as much as my predecessor suggested (something like 60 feet by 30 feet) but certainly a very large tank.

If you would like to keep a Spider Crab, I would recommend keeping a Portly Spider Crab, which can be found in the North Atlantic and can grow from 2-3 feet in length. This will still require a somewhat large tank, but nowhere near as large as what would be needed for a Japanese crab.

Continuing, Spider Crabs are docile creatures, and I would recommend them to any experienced aquarium owner. You just need a large enough tank.

Caring for a spider crab: Spider crabs need little intensive care and are largely nocturnal. They also require socialization once in a while, but having other creatures in the tank would generally be good enough. Spider crabs feed on dead fish, shrimp, and other bits of dead matter and debris. Due to their generally slow movements, it is important that you supervise their feeding, and make sure that they get the nutrients they need. Another important point is that crab tanks require regularly applied amounts of supplement chemicals, like iodine, which help crabs make their shell. Don't despair, though- putting in a bunch of seashells (which dissolve and release said chemicals) will supply the water with enough materials.

Crabs do forage and eat tuatua. Other crustaceans dine on them as well such as slaters, shrimps, lice and sandhoppers.

There is not one person who has a hermit crab with a missing leg. I found a hermit crab with a missing leg and even though the store keeper told me that he had a missing leg I still felt I had a bond with him. If you do get a hermit crab with a missing leg you just have to wait until it molts. Once it molts the leg will grow back and it will be like it never had a missing leg in the first place.

It is the insider trading code phrase between Michael Douglas and Charleen Sheen in the original Wall Street (1987)

No, they live together in large groups of even hundreds searching for food.

The most common types of hospital-acquired infections are urinary tract infections (UTIs), ventilator-associated pneumonia, and surgical wound infections.

Your crabs.

I have some if you would like them. It would be my pleasure. They really come in handy when you are trying to get revenge on someone.

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Most people get them for free, but you might try a street prostitute.

3-4 years

They are edible and they are delicious. Local gov't of Christmas Island discourages killing/eating of them, but they are perfectly good and safe source of food.

mostly their pinchers and their legs

yea its dead

Maybe. If it's painted crabs than yes.

If your brother put crabs on the toilet seat then yes.

So maybe yes or no. It depends.

sea lettuce

they eat crabs

If there is a STRONG fishy odor coming from the crab it means that he is dead.

Yes, they can.

Yes

Unlike mollusks and crustaceans, Hermit Crabs do not produce their own shells. In the wild, they would find abandoned shells on the seafloor, and wiggle into those, so you must provide a constant stream of larger and larger shells as they grow. When they molt, they shed their EXOSKELETON, not their SHELL.

A great bedding for hermit crabs is Forest Bedding or Eco-Earth mixed with play sand.

Forest Bedding or Eco-Earth can be found at a pet store and play sand can be found at your local hardware store.

Yes you can according to this website:

http://hermitcrabcuisine.com/blog5.php/FatsOils/?paged=3

Around 65 degrees the blue crabs usually move out of the mud and start feeding