"margins, mangle habitats as well as sea grass meadows are more likely to be affected by thewarming. The increasing temperature will be experienced but along with this they will seedramatic as well as extreme changes in the temperature. Our biologists as well as ecologistsare facing one of the biggest contemporary problems through the global climate change in thetwenty first century. The change in temperature influences bio chemical reactions, marks theeffect of some other biological entities, sets the pace as well as the rate of biologicalfunctions, limits the distribution of animals, directs the movements of the animals and insome cases it also sets the bio kinetic limits of the life. We can argue that animals alreadybeen exposed to the very high environmental temperatures than the already reef counterpartsmight possess a developed physiological adaptations to deal with the thermal stress, highermetabolic demands as well as hypoxia which accompanies the conditions of environmentalwarming. “The temperature of coral reefs is variable, so it stands to reason that corals shouldhave some capacity to respond to different heat levels,” (Professor Palumbi).Therefore, a good argument can be done that fishes, arthropods and molluscs in shallowtropical waters are already living very near their upper thermal maximum, and any furtherincreases in water temperature would exceed the ability of these animals to mitigate thenegative impacts associated with exposure to harsh environmental extremes. It might beargued that these species are already exposed to markedly higher environment temperaturesthan their reef counterparts and therefore should possess well-developed physiologicaladaptations for dealing with thermal stress, hypoxia, and higher metabolic demands thattypically accompany warming environmental conditions. It is unclear, however, if this is infact the case. Indeed, a good argument can be made that fishes, arthropods and molluscs inshallow tropical waters are already living very near their upper thermal maximum, and anyfurther increases in water temperature would exceed the ability of these animals to mitigatethe negative impacts associated with exposure to harsh environmental extremes. Investigation:Climate change:The change in climate we see is because of the green house. It is the solar radiations amountwhich gets trapped in the atmosphere of earth and then regulates the earth’s temperature. The two main gases that lead to the solar radiation being reflected towards the earth againare carbon dioxide and methane. The increase in the atmospheric concentrations of the greenhouse can be seen from before the industrial era because of the human activities such as landusage and fossil fuel combustion. Thus, as a result the changes in the climate of earth havemoved faster as well as beyond the normal conditions of environment. From the followingfigure we can very clearly see the rate of change in the temperature. The report in the scientific consensus in the IPCC Fourth Assessment Report is:"Anthropogenic warming could lead to some impacts that are abrupt or irreversible,depending upon the rate and magnitude of the climate change." "There is medium confidence that approximately twenty to thirty percent of species assessedso far are likely to be at increased risk of extinction if increases in global average warmingexceed 1.5-2.5 degree Celsius (relative to 1980-1999). As global average temperatureincrease exceeds about 3.5 °C, model projections suggest significant extinctions (forty toseventy percent of species assessed) around the globe."Knowledge and Understanding of the subject:Ecosystems and Biodiversity:Each and every species animals are different and respond differently to the changes in thetemperature and climate. This leads to the confusing biotic interactions like the interactionsbetween predator and prey which changes the functioning composition of the ecosystem. Thetemperature that has been projected for the next century can lead to extinctions for many ofthe animals. Again, it is not for sure as lot more of research needs to be done as we cannotconnect it directly to the climate all the time. The climatic changes are affecting the animalsalong with all the other physical as well as biological systems of the earth. Biodiversity is thecomplexity as well as the richness of life on the planet. The changes in the climate ultimatelybring the loss of biodiversity.If the global warming remains unchecked then most of the terrestrial eco regions as well asthe animals will be the one who will suffer the most. The influence of temperatures profoundon the animals determines to investigate on how temperature’s warming could affect animalsliving on land as well as shallow water which includes the capacity acclimation limits,thermal niche determinations, metabolic compensation and the regulatory effects on thedifferent environmental conditions. These physiological processes are not understood "