Diving deep and predicting storms have kept sharks alive through natural disasters and mass extinction events. Read more about shark survival instinct in one of our latest stories.
at Mote Marine Laboratory recorded that all 13 juvenile blacktip sharks left the shallows of their nursery in Terra Ceia Bay, Fla., and disappeared before Tropical Storm Gabrielle arrived in 2001.on the waters they hit. Storms create desalination, or the removal of salts or minerals, as well as anoxia, or the decrease in oxygen levels.
Evacuation from nearshore areas can mean the difference between life and death for sharks, according toof juvenile bull sharks during Hurricane Irma. They presumed three young sharks were killed from remaining in the shallow waters for too long, probably due to fear of swimming out into open water. Bull, great hammerhead and nurse sharks also swam to deeper waters during Hurricane Irma, according to another study at the
. All but two nurse sharks left the shallow waters of the Biscayne Bay for deeper, safer waters to avoid surface chop and lower saline and oxygenation levels. Researchers believe two nurse sharks took refuge under coral ledges.Sharks also know to leave before storms arrive.
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