shark in aquarium close-up

acrylic animal aqua aquamarine aquarium aquatic attraction basin bloodcurdling blue body captive captivity carcharhinidae carcharhinus closeup conservation dangerous detail dusky enclosure endangered environment fish gills gray grey habitat head hunter jaw large marine obscurus observation observe oceanarium pelagic peril predator saltwater sanctuary sea seaquarium shark skin sleek slits snout submarine tropical turn under underwater water waters wildlife windowpane creature world