Flip­ping heck... is this the proof most dolphins are right-handed?

Scottish Daily Mail - - The Brexmas Election - Mail For­eign Ser­vice

DOLPHINS tend to be right-handed – well, right-flip­pered – sci­en­tists say.

Re­search on one group in the Ba­hamas found they favour their right flip­per and pref­er­en­tially use their right eye and echo-lo­cat­ing ‘lips’ on their right side while hunt­ing prey.

This in­di­cates a spe­cial­i­sa­tion in the left­hemi­sphere of the aquatic mam­mal’s brain, the side that pro­cesses in­for­ma­tion from the right vis­ual field, says a study in the Royal So­ci­ety Open Science jour­nal.

It was based on data col­lected from 2012 to 2018 by re­searchers from the Dol­phin

Com­mu­ni­ca­tion Project in Florida. They found a ‘sig­nif­i­cant’ right-side bias.

Bot­tlenose dolphins echo-lo­cat­ing prey on the sea bed usu­ally turned to the left with their right side and right eye down be­fore bury­ing their snouts in the sand, the team re­ported.

Only one of the 28 stud­ied did the op­po­site – in all four turns it was ob­served to make. The other 27 showed right-side bias in 705 out of 709 turns ob­served by the re­search team.

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