High Quality Content by WIKIPEDIA articles! The spined pygmy shark (Squaliolus laticaudus) is a species of dogfish shark in the family Dalatiidae found widely in all oceans. With a maximum known length of 28 cm (11 in), it is one of the smallest living sharks. This shark has a slender, cigar-shaped body with a sizable conical snout, a long but low second dorsal fin, and an almost symmetrical caudal fin. It and its sister species S. aliae are the only sharks with a spine on the first dorsal fin and not the second. Spined pygmy sharks are dark brown to black, with numerous bioluminescent organs called photophores on their ventral surface. The shark is believed to use these photophores to match ambient light conditions and thus disguise its silhouette from predators. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в среде Интернет в целом, и в информационном сетевом ресурсе "Википедия" в частности. Собранная по частотным запросам указанной тематики,...