in the depths of the ocean a robot shark assists a marine biologist in researching the biodiversity of a coral reef

robot shark ocean biologist marine biodiversity coral reef depths research assistance underwater exploration creatures aquatic ecology ecosystem scientist discovery species habitat conservation robotic submarine environment fisheries tropical invertebrates algae sponge mollusks cnidarians submerged nautical maritime oceanic briny abyssal pelagic benthic photic bathypelagic bathyal abyssopelagic hadopelagic neritic intertidal subtidal integumentary cnidocyte