THEY CAN MAKE MAPS

Focus-Science and Technology - - Zoology -

Along the shores of the Gulf of Mex­ico live small fish called frillfin go­b­ies. Swim­ming around at high tide they mem­o­rise fea­tures of the seabed and fig­ure out where rock­pools will form when the wa­ter re­cedes. At low tide, if a goby gets stuck with a preda­tor in a pool, it knows which emer­gency es­cape route to take. It leaps in pre­cisely the right di­rec­tion to land in a neigh­bour­ing pool. When sci­en­tists re­move these fish and then re­turn them to their ter­ri­to­ries weeks later, the go­b­ies still re­mem­ber their men­tal maps and jump to safety.

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