Cookie Cutter Shark

• alimentaciónIt feeds by taking small round plugs of skin and flesh out of far larger animals — whales, tuna, even submarines — with a characteristic twisting bite.
• It takes perfectly circular bites: it fastens on with its lips like a sucker, sinks in its lower row of teeth, spins on its own axis and pulls away with a cone of flesh, leaving a characteristic round scar seen on whales, dolphins and tuna all over the world.
• It has bitten submarine cables, sonar domes and the rubber sheathing of American nuclear submarines, forcing the coating of some equipment to be redesigned.
• It is bioluminescent: its whole underside gives off a greenish light except for a dark collar beneath the throat, and that dark silhouette against a glowing background is thought to draw in large predators that come in to attack and end up bitten themselves.

Skeleton type

Vertebrate - cartilaginous skeleton (fish)

Habitat and environment

Tropical and temperate oceanic waters of every ocean, down to 3,700 metres deep

Sexual maturity

5 years

Gestation / incubation

Internal gestation

Litter / clutch size

9 live young

Sources consulted: https://es.wikipedia.org/wiki/Isistius_brasiliensis