Scientists have uncovered fossils of a strange worm with spines jutting out of its head that helped it trap prey in the sea 500 million years ago.
http://www.sbs.com.au/news/article/2017/08/04/scientists-id-spiny-prehistoric-sea-worm
https://news.yale.edu/2017/08/03/capinatator-praetermissus-prehistoric-sea-creature-spines-spare
Capinatator praetermissus
Animation of swimming and feeding: