underwater abyss: a thriving oceanic world

sea underwater abyss marine life fish coral reef diversity colorful vibrant depths dark blue green yellow soft lighting diffused highlights texture details oceanic world thriving ecosystem biodiversity biology exploration scuba diving snorkeling conservation ecological balance ocean floor seafloor submarine landscape deepsea creatures pelagic zone mesopelagic bathypelagic abyssal plain hadal hydrothermal vents black smokers giant tube worms foraminifera brachiopods echinoderms