A fisherman in Penghu, Taiwan, had a great day as he was able to record a video of a long green worm-like animal having a pink protrusion. Soon after recording the video, he shared it on his Facebook account.

Wei Cheng Jian said that its pink protrusion seemed like that it is another worm crawling out of that green worm. According to the Telegraph, the creature is considered to be a ribbon worm or nemertea.

Experts affirmed that generally ribbon worms live in sea, but they are able to crawl on land. They live in tropical and sub-tropical regions. The worms also have a special proboscis, which they use for feeding.

The special proboscis is used to cover its prey with thick, poisonous mucus that paralyzes its victim. As soon as he posted the video, it went viral online. But Jian, who was bit nervous with related to the video, removed the clip from his Facebook page shortly afterwards.

But by that time, the clip was copied and shared. If the video is seen, the three three-foot-long bright-green creature could be seen slithering slowly across the dock’s floor and was ejecting its pink tongue seeming that it was searching for a prey.

The video has led to a debate on creature’s origin. Though an exact answer is yet to be known, many believe it is a ribbon worm.