beautiful color hammerhead worm on brown stem tree.

animal autumn background beautiful biodiversity biological bipalium branch broadhead brown close closeup color crawling creepy deciduous ecology environment fauna flat flatworm flower focus forest green habitat hammer hammerhead head humidity indonesia jungle land leaf life little macro mucilage natural nature north outdoor park planarian planarians plant rain rainforest rainy ribbon science selective shine slow small stem sticky stripe sumatra sunlight tree tropical trunk wet wild wildlife wood woodland worm yellow