I went diving with the smartest fish in the ocean. It was life changing

Giant oceanic manta rays are - as the name suggests - enormous. Spanning up to 8m from wingtip to wingtip and weighing up to a huge 2400kg, they are true oceanic giants and feature on the wish lists of scuba divers worldwide. To say I was excited about going diving with giant mantas is a huge understatement.
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