On one of the submersible's first test voyages, Hawkes' team encountered a group of hammerhead sharks.

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"This study confirmed that hammerhead sharks have anterior binocular vision, " says Dr McComb.

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Hammerhead sharks are also on the list and some people claim to have seen Great White sharks although it has never been proven.

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On Monday, the decision to increase protection for oceanic whitetips, porbeagle and hammerhead sharks had only scraped past the two-thirds majorities required by a handful of votes.

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The observation takes account of new research that shows hammerhead and great white sharks patrol fixed routes in the ocean, gathering at hotspots to mate or feed.

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