Weird worm and black creature

[koolademan]

It seems like these are nocturnal and the white worm like creature seems to retract during the day and come out at night and scour the rock that it’s anchored to. It also has 2 arms or tentacles that come out from the base. I haven’t been able to get a really good picture of the black one since it seems to shy away from the light. It’s the black thing on the right of the second picture. It seems to have some sort of antenna or multiple arms or something coming from the front and it seems like it’s all black. It moved pretty quickly away from the light after it exposed itself briefly.

 

[koolademan]

Also including a video

 

[RedFrog211]

The “black creature” is a Gammarid amphipod, good guy

Still working on the worm thing!

 

[RedFrog211]

Update: I’m leaning towards it being a mollusk. It has the large foot, along with the two anterior antennas/tentacles. My guess is the worm-like structure is a type of proboscis it uses for finding and capturing food, perhaps detritus.

 

[vetteguy53081]

Can’t see video but your description says spinoid worm

 

[RedFrog211]

Can’t see video but your description says spinoid worm

It has a large single foot, like a chiton, with two antenna. Then it has a long proboscis structure emerging from its back- no visible shell.

 

[vetteguy53081]

It has a large single foot, like a chiton, with two antenna. Then it has a long proboscis structure emerging from its back- no visible shell.

Look up elephant slug . Pics sorta fuzzy

 

[vetteguy53081]

Worm like one may be a peanut worm

 

[koolademan]

Thank you for the help! The first picture is definitely the best one I have of it. It retracts to the base during the day but yea hoping it’s not harmful. It seemed to be afraid of the amphipod when it came out. Also really glad the black creature isn’t harmful . That’s too bad the video didn’t upload though :/. It just showed the creature moving around the rock that it’s anchored to

 

[koolademan]

This one may be a little better

 

[Tired]

The first one, look up spoon worms. It's probably harmless, whatever it is- sounds like a detritivore.

 

[RedFrog211]

Look up elephant slug . Pics sorta fuzzy

This organism lacks color, in contrast to the elephant slugs black color. It has this proboscis that can extend to nearly 3x its body’s length with cilia on the end.

 

[RedFrog211]

The first one, look up spoon worms. It's probably harmless, whatever it is- sounds like a detritivore.

Doesn’t resemble a spoon worm, but I agree that it’s most likely harmless and a detritivore