the crayfish usually molts, or sheds it exoskel. why does he hide after he molts?
610195
'Cause he's nice and soft and squishy. Easy for any ol' predator to come gobble him up. He's gotta wait for the new exo to harden up so only us humans with opposable thumbs can come along and peel him and eat him up
1113077
No. All insects have an exoskeleton, a hard covering or special skin (cuticle), which provides support and protects them from water loss. Because of their high surface to volume ratio, insects have the potential to lose water rapidly. The hard cuticle is coated with waxes (long chain hydrocarbons similar to those found in beeswax) which minimizes water loss.
683085
Instars are numbered by molts they go through.  A 5th instar larva has gone through 5 molts.  This naming can be used for both nymphs and larvae.  A newly eclosed larva that hasn't gone through any molts is a neonate.
14422
Unfortunately this is a sign of disease in fish. It usually comes before their death. You could try an antibacterial remedy.
489853
Starfish prolapse their "stomach" inserting it into the shells of their favorite food, clams/mussels.  This way the starfish can digest/ingest the meat while the prey is still inside the shell.  \nSome sea cucumbers expel their stomach and other inner organs (which are easily regenerated) when being attacked.  The hope is the predator will be distrated by the insides and the sea cucumber can get away.
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Feeding Habits - Warmouths are carnivorous. Crayfish, shrimp, insects and small fishes make up the bulk of its diet. Most of its feeding is done in the morning, as it seems to sleep at night.
947329
They don't...their shells grow with them.  Only hermit crabs get brand new shells.  Everything else either molts or has a shell that grows with the body.
450388
quarterton, your email isn't set up in here so here is your crayfish answer\n\nhttp://lobsterpond.com/order.htm\n\nthere is a book on this page for sale, check it out\n\nhttp://atlaspub.20m.com/redclpg.htm\n\nand another book in here\n\nLarry
672403
Crabs are body lice that manifest usually in the groin because it's warm and moist. They attach themselves to pubic hair and also attach their eggs to pubic hair. When they are hungry they feed on blood. They cause itching when they're on the move, and as a result of feeding. They are tiny (about or smaller the size of a pin head) and are almost transparent. Their eggs are also almost transparent.
1023079
How big is she?? Normally smaller crabs will molt every few weeks.... but I have a couple big boys who molt whenever they feel like it. It is Normal and is a sign that they are happily growing.\n\nMake sure you provide lots of clacium, protein and color enhancing foods. Plenty of fresh and oceanic/marie de-chlor water and she should be good to go!\n\nMake sure also that you keep a good selection of shells rotating in and out of the tank.. eventually she will slow down and will need a shell that is just right!\n\nP.S. most pet stores know little or nothing about them.. they only can tell you to read the handbooks which are ALL outdated and most websites are equally outdated except a handful that I know of.
810181
The shark! If it decides to kill you, eat will do it quickly and swallow you whereas a croc usually drags you underwater and puts you under a log or something so that you will drown and then he will eat you! Rather get killed straight away than get half eaten and then left to drown!
1024998
well as far as i know most bugs have hairs on there legs.there hairs fives them a sort of ststic cling. i read this i while ago becuse im not big in entomology. but imangine it like this .the hairs disturb the atoms on the wall which causes dispersion forces which cause the very small bug  to stick to the wall...also some bugs have suckers and some produce sticky secretions.\n\nby the wat water flees can walk on water because there light and they don't break the water membrane but will drown in you add soap to the water.
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Fish die when out of water because they have an internal skeleton. Because of that there is nothing to support their body structure when they are taken out of water and their body, especially the gills and heart, collapse under their own weight.\n\nLobsters have an external skeleton. That external skeleton covers their entire body and supports the gills as well as the internal organs. As a result lobsters don't have so much of a problem on dry land. The external skeleton also serves to protect lobsters from drying out, whereas the internal skeleton of fish offers no protection at all.\n\nThis is an example of what is called pre-adaption. Lobsters, crabs and so forth didn't evolve an external skeleton to enable them to live on land, they evolved it because it provided armour and allowed them to move more easily. But a side-effect was that they were better able to survive life on land.\n\n\nThere are many fish species such as eels that are perfectly able to survive on land provided they are kept moist. That is because they don't rely on their gills for breathing. But they still alack an external skeleton and still have major problems with drying out.
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The hard, rigid outer covering of certain animals is called a shell. While many animals, particularly those that live in the sea, produce exoskeletons, usually only those of mollusks are considered to be shells. It is sometimes erroneously claimed that shells are made of chitin, but these are unrelated materials (except for their hardness and use as a covering by animals).\n\nThe shell is usually made of nacre, an organic mixture of outer layers of horny conchiolin (a scleroprotein), followed by an intermediate layer of calcite oraragonite, and then a layer of calcium carbonate (CaCO3) in the form of platy crystals.\n\nNacre is secreted by the epithelial cells (formed by the germ layer ectoderm) of the mantle tissue of certain species of mollusk. Mollusk blood is rich in a liquid form of calcium. In these mollusks the calcium is concentrated out from the blood where it can crystallize as calcium carbonate. The individual crystals of each layer differ in shape and orientation. Nacre is continually deposited onto the inner surface of the animal's shell (the iridescent nacreous layer also known as mother of pearl), both as a means to smoothen the shell itself and as a defense against parasitic organisms and damaging detritus.\n\n \nVarious seashellsWhen a mollusk is invaded by a parasite or is irritated by a foreign object that the animal cannot eject, a process known as encystation entombs the offending entity in successive, concentric layers of nacre. This process eventually forms what we call pearls and continues for as long as the mollusk lives.\n\nShells are very durable and outlast the otherwise soft-bodied animals that produce them by a very long time. Large amounts of shells may form sediment and become compressed into limestone. Shells that wash up on beaches are called seashells, and are collected by some enthusiasts
225807
Crabs run or move sideways because that is the way their legs bend. Crabs do not have ball-and-socket joints; many crabs have joints in their legs moving in a restricted number of planes so that they can only move sideways. Many crabs like the "Shore Crab" need to scamper sideways to avoid the legs getting tangled up with each other. \n\nMuscles work in pairs. A muscle can only retract, or pull; to lengthen again it must relax and be pulled back by another 'antagonistic' muscle. The muscle blocks in crabs are attached to the inner surface of the exoskeleton, including the ten tubular legs, including the legs with claws, or chelae, as well as other appendages.\nAslo,For animals, their body lengths are normally larger than the widths. For locomotion, animals usually move along the long axis of their bodies. As crabs run sideways, they are moving along the long axis of their bodies.\n\nCrabs are scavengers; they do not need to move forward in pursuit of preys like predators do.
82956
Cave fish live in a very small place, and often have no eyes or eyesight. They never leave the small cave they dwell in, and rely on the water flowing through the cave to bring them food and sustenance.  It means that after this person retires they want to stop having the same experiences and views, and perhaps take some risks and try new things, unlike what they have done before. They want to leave the cave of their past life and see entirely new things..
554249
red worms and bugs.  check their belly's after you catch them.  they tend to be full of bugs and some worms.  grab a bug that you find while fishing.  the bugs you see around you are the bugs they are eating.