Hexanchus nakamurai

Hexanchus nakamurai, is a smaller (2m) member of Hexanchidae family. Known as the Big-eye six gill shark or Cow shark, it is very similar to it's much larger relative H. griseus and is hardly distinguishable from the juveniles of H.griseus. As it's common name suggests, it's main characteristic are it's proportionally large fluorescent eyes. Like H.griseus the Big eye is a deep sea dweller and spends most of his life between 100 to 600 meters. There it feeds on smaller fish and invertebrates. Not much is known about this shark but presumably it's behavior would be simmilar to H. griseus except that larger sharks predate on it and not inverse.

There is not enought data to know it's conservation status, but we can assume that it is endangered just like many other deep water sharks. They are fished using deep sea trawling methods and deep long-line fishing.  It is not dangerous to people. It is utilised for its liver, fins and meat, but it is of little value due to its relatively small size.

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Hexanchus nakamurai, un miembro menor (2 m) de la familia Hexanchidae. Conocido como cañabota de ojo grande u ojigrande, es muy similar a su pariente cercano H. griseus y es difícilmente distinguible de los juveniles de éste. Como su nombre común indica, su característica principal son sus proporcinalmente grandes ojos fluorescentes. Al igual que H. griseus, se trata de un habitante de las grandes profundidades marinas, habitando entre los 100 y los 1500 metros. Allí se alimenta de peces menores e invertebrados. No se sabe demasiado a cerca de este tiburón, pero presumiblemente su comportamiento se asemeje al de H. griseus excepto por que los tiburones mayores depredan sobre él y no a la inversa.

No hay suficientes datos como para evaluar su estado de conservación pero podemos asumir que está seriamente amenzado (como otros tiburones de profundidad) por los arrastretros y palangreros de profundidad.