A single slug crawling slowly on muddy tidal flat during daytime at Gaomei wetlands preservation area, Taichung city, Taiwan

sea slug aquatic wetland gaomei marsh mud muddy tidal flat coast soil sand crawl tentacle terrestrial gastropod mollusc nature natural habitat environment feelers swamp swampy daytime animal wildlife wild crab sipping mineral fiddler taichung mangrove ecosystem species crustacean pristine close up macro invertebrate slow fauna slimy move water low tide sediment