Crabs

NO!

Caught a big one, thought maybe it might be good but all I tasted was the big claw and it was enough.

gills

yes because in other ways you can dump water on sand to make out side the water

A Swamp Dog crab is a large Maryland Blue crab. A Swamp Dog crab weighs between 2-6 lbs. It is delicious, filling and meaty.

Generally, a hermit crab will not leave it's old shell until it has a good option in it's claws. If your crab leaves it's shell and does not pick up a new one right away, there is likely another issue going on that you should be concerned about.

The abdomen of the crab is very delicate and soft. The abdomen also requires moisture to keep it supple and healthy, and the crab keeps water in it's shell just for this. The crab will not risk exposing it's abdomen for long unless there is a very real issue going on.

There are several reasons a crab may leave it's shell and won't pick up a new one.

One reason may be that the crab has been in a shell that has a sharp ridge or an irritant in it that has caused injury to the abdomen over time. If a crab has an injury that prevents if from picking up a new shell, it is likely he will die, as he will think that every shell he puts on has an irritant in it, when actually it is the injury to the abdomen.

Another reason may actually be that an irritant has gotten into the crab's shell, and in this case, you should remove the shell the crab has dropped, boil it for a few minutes in dechlorinated water, rinse and cool it off, then spray a little ocean salt water into the opening and place it with the hole up so he can easily slide in if he chooses. Don't be concerned if he tips the shell over and gets substrate in it, he can clean it out himself at this point.

Please note that while painted shells may be fun to look at, they can be a health hazard for your crab. With the moisture that a crab must keep in his shell, paint that may have gotten inside the shell when it was painted will become wet, then dry, causing the crab's abdomen to be permanently stuck within the shell. This always leads to death. The crabs are always forced into these shells, so there could be an irritant inside that the crab would have avoided to begin with, but he was forced to take the shell he has. Painted shells should be strongly discouraged. Do not purchase painted shells for your crabs. The paint is also possibly toxic for them. It may be non toxic for humans, but has never been tested on crabs.

Another reason he may leave his shell is because he has suffered heat damage at some point in the past few weeks. This can happen by using heat rocks (a definite no-no in a hermit crab tank) as they can heat up to over 100*F, which is a dangerous temperature for a hermit crab. It will also dry him out if he is sitting on it, also killing him. This can also happen if you are using an under tank heater without a thermostat attached to control the temperature. If you use an under tank heater, use a probe type thermometer to take the temperature of the substrate over the center of the heating mat. If it is over 82*F, you should unplug it until you can get a thermostat to maintain the temp below 82*F. A crab burrowed down over a too-hot heating pad will also "cook", and the symptoms may not be apparent for several weeks. A crab does not recover from heat damage, it is permanent and deadly.

Do not try to force your crab into a new shell. If you really must encourage him to take a new shell, place several clean shells spritzed with ocean salt water in the openings into a container and place your crab in the container with them. Then set the container into the crabitat so the temp and humidity are good for him, and just leave him alone. It may be best to cover his part of the tank so that outside movement does not startle him. he is extremely stressed, or he would not be out of his shell without picking up another to begin with.

yes because I have crabs right now in fresh water and they are still living.

You can leave the eggs in the nest for a while. If she is in the mood to lay and sit on eggs, she should be satisfied with the ones she has. Throw them out and she will probably lay more. Letting her keep these for a while gives her a rest.

In the summer

Marine hermit crabs live underwater and can sometimes be found in tidepools. Land hermit crabs do not live in the water but need fresh and salt water to survive.

I remember seeing several very large blue crabs that were approx 12 to 14 inches wide and stood about 8 to 10 inches high when walking. I was about 8 when I came across the first one. It didn't run from me, I was the one who ran. The second time I saw a big blue crab, I was a teenager and it came out of the water and started walking inland. It didn't appear to be afraid of anything. I just left it alone.

The giant tiger prawn.

By either grabbing onto something thats close or digging a hole and hiding in it :3 (thats my best guess which i believe is right)

Crab's mouths are either in the middle of their head or just under their shell below their eyestalks. Each species has a slightly different mouth, but the majority have mandibles and maxillae that cover other internal mouthparts.

Moslty marine worms and bivalve mollusks

they can be as little as small as 16 inches to the biggest being 54 inches. there have been some that are record recordings past 54 inches.

The shells can be any color. It depends on what they have available to change into. The crab itself can be a variety of colors, depending on what type they are. Some common hermit crab colors are red, pink, brown, and purple.

Female crabs will only mate once, immediately after they have their terminal moult. Females carry the male's sperm around with them for up to two years. The females can fertilize several batches of eggs with the stored sperm during this time.

A horseshoe crab eats plankton.

Yes they do, but you wouldn't really notice because their blood is blue (or can appear clear) in colour due to a lack of hemoglobin. Also, they don't have blood vessels, their blood just moves around in gaps between the organs and muscle tissue, so if their skin is broken they can bleed to death.

Most crabs are omnivorous, meaning they eat whatever they can get. They feed mostly on algae but take other food including worms, molluscs and other crustaceans, bacteria, fungi and other organic waste depending on the species and their availability. Most crabs eat both plant and animal matter, but some are specialized to eat plankton or shellfish, and some actually catch fish.

yes, we went to the fish market and my son wanted one, not to eat but to put in the aquarium. Well it's a few weeks later and she is still alive AND about to have babies, well, she has the eggs, we'll see what happens!!

you need to fill up the food bowl/plate/etc. up whenever it empties, wet the sponge with water every time it dries, keep the crabitat warm and humid, etc, and when it's molting, do whatever the answer to that say. DO NOT GIVE IT BATHS.

Paper nautilus, conch shell, whelk shells, british pearl shells, and scallop shells. :)

Answer: Usually a sea snail's.