Elusive. Large (maximum TL of 4.17 m). Slender. The longfin mako (Isurus paucus).
So-called sluggish when compared to the shortfin mako, these animals are slender in all body aspects, including elongated fins for better hydrodynamics. Still, although "slow," they are capable of short bursts of speed when pursuing prey (similar to that of the shortfin mako).
Despite having a wide range (all tropical and warm waters worldwide), they are a pretty secretive species. Not much is known about longfin mako shark; like shortfin makos, they are blue/blackish in color, they have rete-mirable, their young practice oophagy and are viviparous with yolk-sac. Their gestation period, birthing sites and mating locations are unknown.
They are classified as Vulnerable (VU) by the IUCN, as they could be caught as bycatch from longline fisheries for tuna and swordfish.
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