Multiple invert ID request

[shrimpnreefdude]

I can't see a second layer to the crown or a spiral at all, but if you can then that'd raise the chances of it being a Christmas Tree Worm. Is it growing out of a coral? Or out of a tube/rock?

It's growing out of a tube. I'm going to look through my album and see if I have a better pic. I'll also try and get a more detailed set of pics with different angles tomorrow.

 

[shrimpnreefdude]

I haven't been able to get better pics of the "Christmas Tree" worm in question. I have however captured a few other things that have me curious.

what the heck is this thing?!

From what I can see of the tentacles there, I'd say probably an anemone, but a better pic would definitely help with that one.

I got a clearer pic of this thing. Anemone? Species? Good or bad?!
It looks to be firmly attached to the rock. If it'sbad, I'll have to smother it with epoxy.

Plus a couple videos. I'm going to try and use that channel to post more videos so I can easily share here.
And that worm thing!

 

[ISpeakForTheSeas]

what the heck is this thing?!

Probably a ribbon worm (Nemertean) of some kind, but seeing its proboscis everted could confirm that. Ribbon worms are predatory. They hunt using toxins they secrete through their skin and proboscis - don't touch them barehanded:

"Certain nemertean species are known to contain remarkably potent toxins: pyridine alkaloids, tetrodotoxin (TTX), and cytolytic or neurotoxic peptides."*

(For the record, tetrodotoxin is what makes pufferfish lethal when ingested).

Anyway, if it's a big one, you would want to remove it.

*Source:

The Toxins of Nemertean Worms - PMC

Most ribbon worms (phylum: Nemertea) are found in marine environments, where they act as predators and scavengers. They are characterized by an eversible proboscis that is used to hunt for prey and thick mucus covering their skin. Both proboscis and ...

www.ncbi.nlm.nih.gov

 

[ISpeakForTheSeas]

Sorry, posted early - yeah, that's an anemone (not sure the species at the moment, sorry), and the other thing is a bivalve (like clams, mussels, oysters, scallops) - harmless filter-feeder.