コヒレダルマザメ

What this shark is

Dalatiids are usually small to medium sharks with no anal fin, two spineless dorsal fins, and in many species a dark body adapted to deep or open-ocean life. Several species also have light-producing organs.

Where it lives

Kitefin, cookiecutter, and related sharks occur in tropical to temperate seas around the world, mainly in oceanic or deepwater settings. Many species have broad but thinly sampled distributions.

This family is most often associated with mesopelagic waters, deep slopes, and offshore environments. Some species make nightly movements toward the surface.

How it differs from similar sharks

Family: Dalatiidae

Compare it against Cookiecutter Shark, Darkie Charlie, and Euprotomicroides Zantedeschia.

Why it is notable

People rarely meet them alive. Most human relevance comes from unusual bite marks on prey, bycatch, or occasional records from deepwater fisheries.

Species-level taxonomy was verified from Sharkipedia's current species list and taxonomy workbook. In this pass, the narrative fields are cautious family-level placeholders synthesized from broad shark references, chiefly the FAO Sharks of the World catalogue, because a stronger multi-source species-level synthesis was not assembled here without risking invented detail. Replace this with a direct species-level synthesis before publication in the app.