An unusual-looking fish with bulging eyes, a mohawk-like fin on its head and the ability to walk on the seafloor with its pectoral and pelvic fins has reached a grim milestone. The so-called smooth handfish (Sympterichthys unipennis) has been declared extinct, the first modern marine fish on record to completely vanish, according to the International Union for Conservation of Nature (IUCN).
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