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)
![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 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](https://pbs.twimg.com/media/DwQRZI4WoAgoBv5.jpg)
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
![Exploring the trends of adaptation and evolution of sclerites with regards to habitat depth in sea pens [PeerJ] Exploring the trends of adaptation and evolution of sclerites with regards to habitat depth in sea pens [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2022/13929/1/fig-2-full.png)
Exploring the trends of adaptation and evolution of sclerites with regards to habitat depth in sea pens [PeerJ]
![A purple sea pen catches plankton as it grows out of a sandy slope in Komodo National Park, Indonesia. Sea pens are often found in sandy habitats where there is current. Stock A purple sea pen catches plankton as it grows out of a sandy slope in Komodo National Park, Indonesia. Sea pens are often found in sandy habitats where there is current. Stock](https://t4.ftcdn.net/jpg/02/72/74/41/360_F_272744127_T79a1UvQ5XJ7IjU7EySoL70sGMXp319N.jpg)