Close up of algae and seagrass on the seabed of the pacific ocean near norfolk island during a dive in a strong current through aquatic flora

closeup algae seagrass pacific ocean seabed norfolk island dive strong current aquatic flora seabed underwater marine life ocean floor greenery marine plants nature ecosystem aquatic vegetation oceanic australia marine ecosystem biodiversity conservation ocean current sea clear water environmental snorkeling scuba diving water plants underwater scene sea garden nautical flora botanic submarine coastal aquatic ecosystem