A new type of hammerhead shark has been discovered in the northwestern Atlantic Ocean, the BBC online quotes marine scientists as saying.
The shark resembles a common species called the scalloped hammerhead but has not yet been classified or named.
US researchers say the animal appears to be rare, breeding only in waters off the South Carolina coast.
They believe the shark is at risk of extinction and conservation efforts are needed to protect females when they are raising their pups.
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