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Indo-Pacific Sailfish Video Stock Footage
It is theorized by marine biologists that the 'sail' (dorsal fin array) of the sailfish may serve the purpose of a cooling and heating system for this fish this due to a network of a large number of blood vessels found in the sail and because of "sail-raising" behaviour exhibited by the sailfish at or near the surface waters after or before high-speed bursts. Learn more about Indo-Pacific Sailfish
View related species in family group: Sailfish
Animalia: Chordata: Perciformes: Actinopterygii: Istiophoridae: Istiophorus platypterus