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At times, there are some moments between humans and marine animals that take everyone by surprise. Whether it’s a dolphin playing with a swimmer, a sea turtle staring at a random diver, or an octopus ...

Of the roughly 250,000 known marine species, scientists think all ~126 marine mammals emit sounds – the ‘thwop’, ‘muah’, and ‘boop’s of a humpback whale, for example, or the boing of a minke whale.