Hello, today i will tell you how the climate change impacts sea life.At first I’ll explain how the climate change impacts the sea. Then I’ll talk about how the sea lifereacts to the carbon dioxide and I will take a closer look at some of the living beings and at the endI will tell you how you can diminish the consumption of carbon dioxide.How the sea is getting warm and acidifiesThe life under water is getting amongst other things due to big amounts of carbon dioxide messedup. Per year the sea absorbs about one third of the expelled carbon dioxide and warms up steadilybecause of this. This has far reaching consequences for the whole ecosystem. The sea hasalready warmed up to 3.000 meters into the depths, whereby the sea level ascends, becausewarm water expands. (The world wide average of the warming since 1955 is at 0,04 degreeCelsius.)When the sea absorbs carbon dioxide, it reacts with water and becomes carbonic acid, which isdecreasing the ph value of the water. As a result of this the sea is getting sourer. Seawater is lightlybasic. So when the sea is getting sourer it doesn’t mean they are getting sour in the taste. Theyare getting less basic.Impact on the living beingsNot all sea creatures are equally affected by acidification. In August 2013 some researchers fromthe Alfred Wegener institute were able to show that especially urchins, corals, starfishes andmollusks suffer under it.Affected by the acidification of the seas are initially creatures which are forming calcareousskeletons. The ability to form slipcovers decreases with a dropping ph value. Mussels for exampleare particularly in danger when the ph value falls under 7,6. The water debilitates the sticky threadsfrom the mussels. In sour water, the otherwise stable threads, can’t cure out, whereby they tearapart and the mussels are losing their grip on the ground. For starfishes, crabs, or fishes theybecome an ease prey.Crabs, urchins and corals have the problem that their chalky slipcovers are getting assaulted bythe sour water. Because of this they can’t be chows for other creatures, which can cause to farreaching consequences, because this species is often educating the base of the food chain in theseas.Corals are dyingIn September 2012 the Potsdam institute predicted that more than two third of all the coral reefscould be destroyed in 2030. The reason for this are the acidification and the warm seawater. Atemperature rise of only two degrees can be lethal for the corals, because they repel unicellularorganisms with which they’re living in symbiosis. This can cause them to starve to death.FishesMany fish species are escaping into colder waters, because in warm water there is less oxygenavailable. According to the results of a study by the Geomar Helmholtz-Centrum for oceanresearch in 2017 the oxygen concentration has decreased by more than 2o/o. Even so for most ofthe creatures it isn’t an option to migrate into colder ocean depths because there they would missthe sunlight and the plant-based food. So when the species won’t conform it may happen thatmany of them will die out.Some animal species are already confused. Clownfish-larvae’s for example are losing theirolfaction which they urgently need to find their habitat. Because of the higher temperatures somespecies think that it’s time for the oviposition. -A big mistake cause either there isn’t enough foodor there are still to many natural enemies.(Habitats have shiftedAbout 80 researchers presented their insights in September 2016. Due to the warming the seahabitats have changed from the poles up to the tropics. Jellyfishes, seabirds, plankton and turtlesalready migrated 10 latitudinal lines into the colder poles.Inside of the tropical regions we can expect a decrease of the fish stocks. When the carbon dioxideemission stays unchanged the catcher income in southeast asia in 2050 could be 10-30°/o belowthe mean value in 1970-2000.According to researchers more animals and plants become ill in warm water. Even pathogens thatare dangerous for humans can spread faster in warm water.)profiting sea creaturesFew sea creatures do not mind the increasing carbon dioxide. The barnacle for example evenbenefits from this. When the ph value decreases, the barnacle multiplies. Even for some musselsto much carbon dioxide is advantageous. When there is to much carbon dioxide in the water, thecrabs, which would normally strengthen themselves on the inside of the mussels, migrate away.When the main enemy of the mussels disappears, the chance increases, that they can customizeto the new living conditions.diminish the consumption of carbon dioxideIt can make a big difference when you’re saving electricity. Using LED-lamps instead of these oldlightbulbs, not using the washing machine if it’s only half-full, not having the heater on all the timeor eating less meat can be really helpful. Using your bike instead yf your car can also be veryhelpful. By doing nearly nothing you can save so much electricity.So .. this was my presentation about how the climate change impacts the sea life.