1 / 10

Antarctic krill

Antarctic krill. BY JOSH. What are Antarctic Krill?. Tiny like a mini-prawn, Antarctic Krill are 5 centimetres long, weigh 1 gram and can live up to a maximum age of 6 years.

liluye
Download Presentation

Antarctic krill

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Antarctic krill BY JOSH

  2. What are Antarctic Krill? • Tiny like a mini-prawn, Antarctic Krill are 5 centimetres long, weigh 1 gram and can live up to a maximum age of 6 years. • They are a very important part of the Antarctic marine environment – because fish, birds whales and hundreds of different animals all feed on krill. • Without krill most life forms in the Antarctic would disappear.

  3. How do they survive? • Antarctic Krill can swim down to 100 metres below the surface during the day. • At night they drift up the water column towards the surface where they find phytoplankton to eat. • But they have to be careful they don’t get eaten themselves.

  4. Special features • Antarctic Krill are the largest of the 85 known krill species. • They live in swarms, some of these swarms are so big and dense they can even be seen from space! • The total weight of all Antarctic Krill is more than the total weight of all humans on earth.

  5. Where is Krill found? • They are found in various parts of the Antarctic ocean, in different amounts. • Antarctic Krill is located in high quantities closest to the ice. • This map shows where Antarctic Krill is found.

  6. How do Antarctic Krill breed? • Krill spawn eggs in several “broods” • Krill may release eggs multiple times per season • The spawning season can last as long as 5 months • They are ready to breed after 3 years • Both female and male Krill are required to reproduce

  7. Where in the food chain are they? Code: whale E=Eat E A=Absorb Krill E phytoplankton A sun

  8. Changes in Krill environment • In the Antarctic waters, sea ice population is decreasing because of climate change. This impacts Krill since they feed on sea ice algae • Antarctic Krill comes from aquaculture industry, which is running out of food to sustain it’s rapid growth • Fish farming uses 75% of worlds fish oil 40% of it’s fish meal- which could reach 79% and 48% respectively by the end of this decade

  9. How to stop krill declining • Krill are very dependent on climate for their survival. Their ability to reproduce is dependent on having enough food like sea ice algae. • Climate change depletes sea ice as it melts. • So to help save Krill we can try to stop eroding their environment

  10. THEEND

More Related