No pigment is present in most deep-sea dwelling species.
For most deep-sea species, almost nothing is known of feeding habits.
In reality, most deep-sea fishing is all pain for little gain.
Because most deep-sea animals are fragile and delicate, even if large in size, they will never withstand the level of disturbance caused by trawl gear.
This study presents evidence that determination of reproductive cycles in many deep-sea species may be affected by low sampling resolution inherent to most deep-sea studies.
Most deep-sea fish have flesh that is not palatable, but a few were found that could be marketed for human consumption, if filleted and renamed to be made more attractive, or for processing into food pellets for poultry.
Most deep-sea creatures do not see in color, but the researchers say that these crabs are sensitive to ultraviolet light, which helps them distinguish between blue and green light.
Narrow, flat abyssal plains of ponded sediment generally occupy trench axes; however, in most deep-sea trenches the accumulated material is relatively shallow since the bottom of the trench subducts into Earth's interior.
In the MOR-B and all ABA settings (comprising most deep-sea hydrothermal systems), almost all potentially bioavailable energy can be obtained from aerobic metabolism (Figure 7).
