Strange Rock-Like Creature

[4theluvofcoral]

So I recently added some aquacultured rock and did not notice this right away but there's what I thought was a rock mass that had some yellow/brownish color to it. I thought maybe it was some kind of encrusting sponge/coral was growing on it but I noticed one night there was a hole or mouth and as soon as I flashed light on it, it closed abruptly and now I have it on video. Is anyone able to identify this thing? It doesn't really move just stays in one area. I have poked it with a syringe feeder and it does contract but I have no clue what it is. I couldn't find anything doing a search but I guess I also don't know how to begin a search it's unlike anything I've ever seen or read about.

 

[StatelineReefer]

Tunicate, also known as a sea squirt. There should be another hole on the side of it... They draw in water, trap particulates, and then jet it out the side.

 

[vetteguy53081]

They are filter feeders and will grow into a colony. You appreciate it or gel superglue it shut and remove with razor once not pulsing water in and out

 

[Johniejumbo]

They are filter feeders and will grow into a colony. You appreciate it or gel superglue it shut and remove with razor once not pulsing water in and out

Brutal ;Hilarious ;Hilarious ;Hilarious ;Hilarious

 

[4theluvofcoral]

They are filter feeders and will grow into a colony. You appreciate it or gel superglue it shut and remove with razor once not pulsing water in and out

Well if they're not harmful there's no need for that, thanks.

 

[vetteguy53081]

Well if they're not harmful there's no need for that, thanks.

Problem is, eventually they wont have enough food source and die and pollute the tank. That's why I suggest removal otherwise theyre neat to watch