flexibel Kabelbaan Bek sea pen Scheermes Omgaan met Rechtdoor
American Museum of Natural History on Twitter: "You might be surprised to know that this feather-like structure—dubbed a sea pen—is a colony of polyps working together to survive in the ocean. Polyps
Sea Pens: Learn about these interesting marine species.
Borneo Scuba Academy - What do sea pens do? Sea pens are a type of octocoral, named for the eight stinging tentacles they use to capture plankton (tiny floating plants and animals)