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Habitats

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by

Roger Wilshaw

on 9 February 2013

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Transcript of Habitats

The Deep Ocean Introduction I have chosen to introduce you to the deep ocean. Did you know that the 'deep' ocean is classified as 200m+ below sea level? Do you want to know more about this fascinating habitat? Do you? Do you? Do you really? Well, then, click the right arrow key and get on with the prezi! Description of the deep ocean The deep ocean is the largest environment on Earth. Its area is a whopping 360 million km²! How much water is that? Nearly 1½ BILLION km³! That is a lot with a capital L! Well, it is 50% of the Earth's surface! As the deep ocean can range from 200m below sea level to about 1100m, the amount of light you can see varies hugely! This is because of refraction and bioluminescence. Below depths of 200m, light has refracted so much that there isn't much light to see with. However, if you go deep enough, animals use bioluminescence to create their own mini light shows! Therefore, as you travel down through the deep ocean, light can go bright, to dark, to bright again... in an almost unpredictable pattern! Oliver Wilshaw 6CS Animals of the deep ocean Protection of the deep ocean The deep ocean is a 'service provider' of two things: 1. A convenient place for waste disposal (like a landfill but in the ocean) 2. A source of wealth (such as fishing, oil and gases) Marine Litter Marine litter is a threat to the deep ocean. Marine litter is any persistent solid material disposed of in the seas/oceans on purpose or accidentally. A food web of the deep ocean Sourced from ww.sciencedirect.com As you can see, the chain does not start with a green plant - the light available is too little for photosynthesis - it begins with nutrients composed of dead creatures instead. This means that a fish could be eating his own ancestors! Bibliography:

Food web photo - sciencedirect.com Bibliography:

Photos - sciencedirect.com and photography-match.com and mnn.com and niwa.nz and animalfacts.lv2lvu.com and response.restoration.noaa.gov and noaanews.noaa.gov
Other information - plosone.org/article /info:doi/10.1371/journal.pone.0022588 and bbc.co.uk/nature/habitats/Deep_sea and sciencelearn.org.nz/Contexts/Life-in-the-Sea/Science-Ideas-and-Concepts/Adaptations-of-marine-organisms Animals of the deep ocean Why are there no plants in the deep ocean? It's simple; there isn't enough light for plants to live, but animals can. Some animals commonly found in the ocean are: horseshoe crabs squid conchs scallops sea urchins crab shrimp lobster seahorses octopus sea turtles sea bass barracuda cod jellyfish whales sharks Adaptations of oceanic animals Cockles, for example, have developed specialised structures to filter organisms and other particles of food from the water. Bryozoan colonies are highly populated on the continental shelf of New Zealand. They look like plants, but they're actually made up of lots of tiny individual animals that have joined together in order to more successfully find food and survive predation. Whales have developed a warm-bloodedness, that means their body temperature is the same, no matter what the water temperature is! United Nations Resolutions For many years, the United Nations have discussed ways to conserve the deep oceans. In 2011, a further resolution introduced stronger protections but still some countries fail to comply. And that is a summary of the deep ocean habitat. In 2006, the United Nations passed resolution 61/105 introducing a ban on fishing in vulnerable marine ecosystems.
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