3.1K views · 16 reactions | Christmas tree worm is the common name of a species of marine worm that lives in tropical coral reefs around the world. At the first sign of danger, Christmas tree worms quickly retreat into their burrows, hiding from potential predators. Here's a Christmas tree worm retracting in Mantanani Island, Sabah, Malaysia. #christmastreeworm #Mantanani #Sabah #Malaysia #Borneo #SabahWildlifeDepartment #SabahTourism #Scubazoo #SZtv | SZtv | Facebook

16K views · 183 reactions | Join our movement to #StopThePlunder and safeguard marine habitats against the threat of colossal #krill trawl nets.  Let's defend our oceans and fight climate change together! Submit your images here: https://seashe.ph/KrillInvestigationForm Know someone consuming krill products? Tag them below to help #ExposeKrillProducts!  #Antarctica #seashepherd #fortheocean | Sea Shepherd | Facebook

17K views · 564 reactions | The sea mouse is marine worm. Its body is covered in bristles - giving it a furry appearance. At the fringes are beautiful iridescent bristles that shimmer blue, green and gold. The sea mouse is an active predator, hunting small crabs and other worms on the seabed. | Get Wild | Facebook

This is a marine worm, Dinophilus, and it’s parasitized by unicellular organisms called Grellia. You can see the parasites as blue, banana-shaped structures in this polarized view. . Dinophilus are a few millimeters in length and inhabit all marine environments. They eat algae and mind their own business without bothering anyone. However, the large population I had in one of my fishless tanks were all infected by a species of unicellular organism. . When I checked an odd-looking Dinophilus under