2017 Was the Hottest Year Yet In the World's Ocean

Ocean temperatures in 2017 measured the hottest year on record.  This increase in temperature leads to coral bleaching and melting sea ice.  Coral bleaching is when coral removes the algae that it needs to be healthy, due to stress from heat or pollution.  Without this algae, the coral will starve.  As a result of the warmer waters, we could also see rising sea levels, more intense storms, and unstable marine habitats.  Greenhouse gases such as carbon dioxide and methane are trapping more heat closer to the Earth's surface, therefore causing the increase in ocean temperatures.

https://news.nationalgeographic.com/2018/01/hottest-year-record-global-warming-oceans-spd/

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