GIMME SHEL­TER

Sport Diver - - Dive Briefs -

Once a ma­rine pro­tected area has been estab­lished, fish evolve rel­a­tively quickly to take ad­van­tage of its pro­tec­tion, ac­cord­ing to a re­cent Univer­sity of Bri­tish Columbia study. Re­searchers ob­served that skip­jack tuna changed their move­ment pat­tern within 10 years of an MPA be­ing estab­lished and great white sharks ex­hib­ited the same change af­ter 50 years. The study found that MPAS pro­mote higher pop­u­la­tions and lower move­ment rates, with less-mo­bile fish be­ing more likely to sur­vive and pass that trait along.

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