A dead zone is an area of water where there is no oxygen, so the fish all die. There are “dead zones” in the Gulf of Mexico every year, but the current zone is the biggest anyone there has ever seen. Keep reading to find out why dead zones mean more SHARK ATTACKS on swimmers!

BBC News reports that “conditions are right” for this year’s zone to be even bigger than last summer’s, which measured 6,662 square miles. Dead zones are caused by fertilizer runoff. Fertilizer contains nitrogen, which stimulates the growth of algae, which then absorb all the available oxygen, leaving none for the fish.

Dead zones are even blamed for shark attacks, since they cause sharks to come inland, closer to the beaches, searching for food. Think you know all about sharks? Click here to find out!

Art credit: gimp-savvy.com

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