can crawfish survive under water and on land , do they have gills and lungs?
352391
Crawfish is actually from a family member of shrimps and lobsters.They live underwater and can only survive on land for a few minutes.Like any other shripms,they do have gills.
1167045
two things can happen after they become warm blooded\n\n1)if they continue to live in water then they must have a stronger better gills  \nwith more oxygen extracting capacity to keep thier blood warm in the water\nthey will eat more\n\n2)if they decide to come on land then their gills would be converted to lungs
98703
Not all fish do die when taken out of water. Some fish can survive indefinitely out of water provided they are kept moist with rain or dew.\n\nOf those fish that do die the most common cause of death is suffocation. \n\nFish mainly extract oxygen form the water through their gills. The gills of fish consist of hundreds of thousands of tiny strands, almost like hair. Have you ever seen someone with long hair underwater and noticed that the hair floats out from the head? Well underwater the gill filaments behave the same way. In the water those strands float apart and the fish is able to to extract oxygen from every one of them. \n\nWhen the fish is taken out of water the gill flaments collapse.  Look at a perosn with striaght hair when they climbs out of the water and notice how the hair all sticks together in a sheet? The gills of a fish behave the same way. On dry land the gill filamens of the fish all stik togather. Instead of being able to extract oxygen from each one it can only extract oygen form the ones in the surface layer. That just can't provide the fish with enough oxygen and it suffocates.\n\nContrary to popular belive fish don't technically die because they can only extract oxygen form water. Fish could breath air just fine if the gill filaments didn't collapse. \n\nIOW fsh die on land because air can't support their bodies the way that water can.
1184568
With the exception of lungfish, most fish don't last long out of water because they can't breathe.  They die within minutes As well, they can't move at all so they are sitting prey for predators. In hot weather, they also dry out quickly.
388407
HABITAT REQUREMENTS: Adult largemouth bass generally inhabit water less than 20 feet deep. They tend to reside in the protection of structure such as aquatic and shoreline vegetation, woody material, or rocky areas. Juvenile largemouth bass eat plankton, immature aquatic insects, and crayfish. Adult bass eat mostly fish and crayfish
207219
They breathe air because as mammals, they have lungs. That's a constraint imposed by their evolutionary history; no mammal has "re-evolved" gills or other respiratory surfaces.\n \nOn the other hand, living in salt water has allowed them to develop huge bodies with little skeletal support. On land, where gravity is not counteracted by buoyancy, the sheer pressure exerted by the weight of their own bodies makes their bodies collapse. In addition, their skin dehydrates rapidly when exposed to the air. Thus, adaptation to a given environment always constrains survival in different environments. Evolutionary paths are like that.
111141
A frog can respire in two ways- pulmonary respiration(through lungs) and cutaneous respiration(through skin).Thus under water it can respire through skin and on land, with the help of lungs.The sklin of a frog is thin and richly supplied with blood vessels to facilitate exchange of gases.It is moist and slimy for protective purposes.
1109181
axolotl they are salamanders that have these weird looking gills and live under water.  Also they are somewhat transparent
1146931
They are arachnids, not crustaceans. Easy to find on the Indian Ocean shores. Dead animals eaters. Breath using gills, two sexed animals, egg layers, free swimmers. Outstanding feature: their blood is used as a reactive in a positive detection of human encephalitis.\n\nmore info: Barnes book of invertebrates
236910
Ichthyosaurs are reptiles,which mean they do not have a constant body temperature like we humans do.They probably live in a clmate that's not too hot or too cold.If it's too hot or cold,the ichthyosaur would not be able to control its body temperature and die.They live their entire lives in water.
56609
They don't swallow the water, per se - they simply swim and let the water flow past their gills.  As the water flows throughout the network in their gills, the oxygen that's dispersed throughout the water enters their bloodstream, thus enabling the fish to breathe underwater!\n\nThis is why when one purchases a fish tank, one has to get an oxygen supplier as well - no fish can survive in just standing water for long!
687526
The trachea in reptiles is similar to that of higher vertebrates, with well-developed hyaline rings.  However, there is no mucociliary transport mechanism to aid the removal of foreign substances from the respiratory tract.  Furthermore, the absence of a diaphragm prevents the animal from coughing. \n\nThe lungs are similar to the avian-type system with a series of reticulated open-ended sacs and many capillaries in close proximity.  The cranial part of the reptile lung is the gaseous exchange portion, while the caudal part functions as an air sac.  The latter may act as a reserve of air during periods of apnoea. \n\nAlveolar macrophages are present in the reptilian lung, but may display poor bacterial removal if the animal is being kept below its optimal temperature. \n\nIn snakes, the right lung is larger than the left, and generally stretches from the heart to the kidney.  It may extend even further down to the cloaca in some aquatic snakes.  Some snakes have a tracheal lung on the dorsal aspect of the trachea, which enables the snake to breathe when the main lung is compressed by swallowed prey.
284891
Living cells cannot absorb oxygen directly.  It has to be disolved in water.  Fish do not have any mechanism for disolving the oxygen in the air (they don't need it, since they live in the water), and so cannot survive on air.\n\nOur lungs have a lining of special mucous which is produced specifically to disolve oxygen and put it into a liquid so it can be used by our bodies.  It is remarkably similar to sea water... evolution has basically preserved the underlying transfer mechanism, and given us a way to carry our own little bit of ocean around with us!\n\nThe hylan membranes make this special fluid.  These membranes are not needed in the womb and so grow late in fetal deveolpment; hylan membrane disease results when a child is born before these membranes are fully developed, and they are at risk of suffocating in the air, just as a fish would.
519851
Fluids are not compressible and since most sea creatures cells/bodies are fluid, they are not affected by the pressure.  Air however is compressible so if the had lungs filled with air, they would have increase the amount of air in the lungs as they dove or get crushed.  Fish with swim bladders have to gradually increase the air in these bladders, if you catch one and reel him up from let's say 200', he is very dead by the time he makes it to the surface as the bladder ruptures as the air expands.
461727
Fish have 2 major chambers (one auricle and one ventricle, plus one sinus venosus - before the auricle - and a conus arteriosus - after the ventricle). However, in the lungfishes there is a partial separation of both the main chambers, linked to the existence of a pulmonary blood circuit. \nAmphibians have two auricles and one ventricle, and the latter has deep "pockets" where oxygenated and deoxygenated blood goes, so that these two blood volumes do not mix much  while each flows through its respective circuit.\nReptiles... well, there is no such thing as a "reptile" really but rather three different groups. Both the turtles and the squamates (lizards and snakes) have two auricles and one ventricle, and the latter is partially separated by a spiral septum so that the pulmonary and body circuit do not usually mix (except in special circumstances). \nCrocodiles are related to birds, and just like them, they have a four chambered heart, with two auricles and two ventricles. However, in crocs the oxygenated and deoxygenated blood can get mixed because they have a hole between the paired main blood vessels that leave the heart. \nBoth birds and mammals have also four-chambered hearts with completely separate pulmonary and body circuits. \nCheck the link, there are good schematic illustrations and explanations for each taxon.
315887
Hydrilla has certain special cells that can take the dissolved oxygen for respiration. Water contains dissolved oxygen thro' which fish respire. The same principle is applied in hydrilla. You need not have to worry much about this since it shall be again dealt in your higher grades.\nIn case you have more queries, you can mail to me on sunghill@yahoo.co.in
424550
aside from gills, they also have lungs.