S.C.I.E.N.C.E on Instagram: "Remarkable deep-sea discovery has revealed one of the ocean’s most unusual creatures. Scientists have identified a tiny pocket shark in the Gulf of Mexico, a rare species that measures just around five and a half inches long. This miniature shark stands out not just for its size but for its glowing features. It has clusters of light-producing photophores across its body and tiny pocket-like glands near its gills that can release a luminous fluid. These adaptations ma