Dozzine di piccoli squali martello sono cresciuti per anni in luogo segreto, al riparo dai pericoli e dagli sguardi indiscreti, nuotando pacificamente tra gli altri pesci in cerca di crostacei. Dopo un anno o due, quando crescono e hanno bisogno di più cibo, gli squali escono in mare e talvolta migrano per migliaia di chilometri. Possono arrivare fino a due metri e mezzo di lunghezza e vivere fino a 50 anni.
Questo speciale "nido", scoperto a novembre da un gruppo di biologi, si trova nelle Galapagos e potrebbe essere uno degli ultimi santuari rimasti. Gli squali martello sono ad alto rischio di estinzione, e questa scoperta potrebbe aiutare gli scienziati a proteggerli.
AFP/eb
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