Bioluminescence - Bioluminescence is the production of light by living organisms. Many deep-sea organisms are bioluminescent. Brackish Water - This is a zone where salt and fresh water meet. It is composed or varying amounts of salt and fresh water mixed together. Carnivorous - Flesh eating.
Male sharks have claspers.
Continental Shelf - The continental shelf is the part of the ocean floor next to each of the continents. The sea floor slopes gradually from the continent to a depth of about 100 metres. Dermal Denticle - Tiny teeth that make up a sharks skin. Dermal denticles are small, hard, tooth-like structures, also called placoid scales. They have the same structure as a tooth, having an outer layer of enamel, dentine and a central pulp cavity.