Some ice rests on the sea rather than on land. This is known as sea ice, which can cover huge areas of the ocean, or make up small individual icebergs .
While Antarctica is covered by ice sheets, the ice in the Arctic is largely sea ice .
Arctic sea ice melt doesn’t contribute much at all to sea level rise because the extra water simply replaces the ice in the space it filled before .
However, it does mean polar bears have to walk and swim over greater distances which can be particularly dangerous for young cubs .
Moreover, melting sea ice increases global warming. This is because ice reflects sunlight much more than water, so without sea ice the oceans absorb more heat, causing them to get warmer . You can see an infographic of this if you swipe across!
 https://www.ipcc.ch/sr15/chapter/glossary/ (Sea Ice)
 Link: https://climate.nasa.gov/blog/2861/arctic-and-antarctic-sea-ice-how-are-they-different/ (How they’re different Paragraph 1)
https://www.ipcc.ch/site/assets/uploads/sites/3/2019/11/07_SROCC_Ch03_FINAL.pdf (Page 230 Paragraph 1)
https://www.pnas.org/content/pnas/105/6/1786.full.pdf (Arctic Sea Ice)
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