underwater exploration: a diver encounters a cluster of brittle stars in the deep sea

diver brittle stars sea life underwater deep ocean marine exploration biology scuba diving night dive dark equipment wildlife aquatic oceanography floor ecosystem benthic starfish invertebrates black blue bioluminescence light water darkness silhouette habitat science research world coral seafloor reef creatures landscape depth ecology oceanic twilight zone encounters cluster lone explores illuminating resting 39aph39 create sense mystery intrigue highlighting fascinating found depths