This is a deep-water species occurring in the Caribbean Sea.
They are usually white underneath, or black in deep-water species.
While mainly a deep-water species, it occurs at shallower depths in the northern part of its range.
Now they are reduced to a few deep-water species.
The brothers make sure they get last-caught tuna, mako sharks, swordfish and other deep-water species.
It is a deep-water species.
The small shell of these deep-water species is relatively thin.
Three deep-water species have also been recorded near the British Isles, and are likely to occur in the area.
While they are mostly found in shallow water up to 20m, there are a number of deep-water species that can live as deep as 500m.
Available scientific evidence on deep-water species suggests that they are outside safe biological limits and that measures should be introduced to allow rebuilding of the stocks.