2. Caribbean Sea

Caribbean Sea [huanqiu.com]

Four types of endangered sea turtles habit among the coral reefs in the Caribbean Sea. Rising of sea level and temperature of sea water, acidification of the oceans and extreme storms all can destroy the beach where the female sea turtles lay eggs and also threaten the coral reefs that turtles live on. Due to the temperature's influence on the gender of turtles, scientists worry about the decline in male turtles, which could threaten the survival of the species.