rare image of ghost flatworm - maricola planarian triclad flatworms in reef aquarium glass

acropora animal animals aquarium aquascape aquatic aquaworld blue bright clean closeup color colour control coral creature detail eater ecosystem exotic fauna flat flatworm flatworms ghost glass infection invert invertebrate invertebrates inverts isolated life macro maricola mariculture marine microscope microscopic mystery natural nature oceanography parasite pest pests pharynx photography planaria planarian planeria platyhelminthes predator reef regeneration rhabditophora saltwater sea seawater seaworld shape small tank tiny transparent tricladida triclads tropical trouble turbellaria undersea underwater unique water wildlife worm zoological zoology