Narwhals in Baffin Bay were chosen because the area is significant for climate change research due to the large concentration of sea ice and marine mammals. Baffin Bay is over five hundred miles wide in some places. It is right next to Greenland where huge slabs of ice are breaking off and sliding into the ocean. Some of the slabs are so large they are referred to as islands, such as Petermann B 2010. This ice island, estimated to be 80 square kilometers, is big enough helicopters can land on it.
These gigantic slabs of ice are melting and releasing fresh water, disrupting the balance of fresh water and salt water, which blocks certain marine life from forming. They also can disrupt the food cycle, it is thought, by blocking sunlight plankton need to survive. Without plankton the narwhals and other species living there might not have enough food. The ice islands also scrape the ocean floor in some places dislocating clams, starfish, and whatever is in their paths. “All these organisms are very important food sources for animals like seal and whales or walrus,” said scientist Jean-Eric Tremblay. (Source: Nunatsiaqonline.ca)
Narwhals are known for their long tusks, which are actually teeth.
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