British marine biologist and photographer Richard Smith focuses his work on the ocean’s tiniest and weirdest creatures.

Recently, he led the assessment of the Walea soft coral pygmy seahorse, which was listed as the first critically endangered seahorse. Walea pygmies, along with many other marine species ...

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Pygmy seahorses, about the size of a fingernail ... This story and others are collated in Smith’s book “The World Beneath: The Life and Times of Unknown Sea Creatures and Coral Reefs,” published in ...