ID, no clue what this is

CatsandClowns

Active Member
View Badges
Joined
Jun 24, 2025
Messages
132
Reaction score
50
Location
San Diego CA
Rating - 0%
0   0   0
20260120_122120_36A4E549-9C60-4D19-A24C-6A9D65C5B0D9.png

Anybody have an idea what this could be. I can’t really get any better angle to take a good photo since it’s under a rock structure. Genuinely no clue what it is, first thought was a pretty red rock, but I noticed it’s got these strange tubes poking out the top and side.
 

Crabs McJones

Regional Reef Manager (AKA Revhtree's Boss)
View Badges
Joined
Jul 24, 2017
Messages
33,584
Reaction score
153,812
Location
Wisconsin
Rating - 100%
3   0   0
Tunicate? Does it move at all or react if you poke it with something?
 

Crabs McJones

Regional Reef Manager (AKA Revhtree's Boss)
View Badges
Joined
Jul 24, 2017
Messages
33,584
Reaction score
153,812
Location
Wisconsin
Rating - 100%
3   0   0
It’s tough to reach so I haven’t tried. But my gramma swims overtop of it all the time and it never moves
Likely wouldn't until something physically touches it. Another way to tell is to watch and see if it "pulses"
they expand and contract to move water in and out to filter feed
 
OP
OP
C

CatsandClowns

Active Member
View Badges
Joined
Jun 24, 2025
Messages
132
Reaction score
50
Location
San Diego CA
Rating - 0%
0   0   0
It’s tough to reach so I haven’t tried. But my gramma swims overtop of it all the time and it never moves
Likely wouldn't until something physically touches it. Another way to tell is to watch and see if it "pulses"
they expand and contract to move water in and out to filter feed
I can’t say i notice any pulsing movement in them but that just could be because of the size. In total I’d say it’s about the size of a quarter
 

TOP 10 Trending Threads

WHAT AMOUNT OF LIVE ROCK AND SAND SHOULD BE PRIORITIZED FOR OPTIMAL BIODIVERSITY/FILTRATION?

  • 100% live rock + bagged sand

    Votes: 34 28.1%
  • 100% dry rock + 100% live sand

    Votes: 41 33.9%
  • 50/50 live/dry rock, 50/50 live/bagged sand

    Votes: 27 22.3%
  • 75% live rock, 25% live sand

    Votes: 11 9.1%
  • 25% live rock, 75% live sand

    Votes: 8 6.6%
Back
Top