This 7 August 2018 video says about itself:
Corals Collaborating to Eat Jellyfish: First-Ever Video | National Geographic
Filmed for the first time, Astroides calycularis coral trap and devour “mauve stinger” jellyfish. In the western Mediterranean Sea, the orange coral forms colonies of small organisms called polyps. The polyps are connected, and together act as a single organism with multiple tiny mouths.