Is this black sea sponge?? REEF2REEF Saltwater and Reef Aquarium

Sponge ID please REEF2REEF Saltwater and Reef Aquarium Forum

Orange sponge looking slug? Never seen this before

Black Sea slug REEF2REEF Saltwater and Reef Aquarium Forum

What is this. A sponge hitchhiker??? REEF2REEF Saltwater and Reef Aquarium Forum

Stung by a Sponge REEF2REEF Saltwater and Reef Aquarium Forum

Reef Spotlight - REEF OF THE MONTH - April 2023: Lilo's Exquisite Softy Pico Reef! A 6-gallon Masterpiece of Unmeasured Parameters!

Sponge crab sponge falling apart? REEF2REEF Saltwater and Reef Aquarium Forum

Sponge? REEF2REEF Saltwater and Reef Aquarium Forum

Worm or sponge? Tunicate??? REEF2REEF Saltwater and Reef Aquarium Forum