sea urchin hitchhiker id?

[Kokofish_2022]

Sea urchin got itself stuck between two live rocks so I helped it out. The spines caused a very slight itchiness on my fingers but otherwise I am okay. Live rock came from a southern Florida live rock aquaculturist.

 

[WheatToast]

Looks like an urchin, possibly a slate pencil urchin (Eucidaris tribuloides)? I'm not that great with echinoderms.

 

[steveschuerger]

That’s definitely a pencil urchin here’s mine

 

[Shibaken3]

pencil urchin, they are relatively safe may eat coral when hungry

 

[Kokofish_2022]

That’s definitely a pencil urchin here’s mine

What do they eat and will my frogspawn coral be okay?

 

[steveschuerger]

What do they eat and will my frogspawn coral be okay?

Basically detritus on the rocks. Won’t bother coral at all, at least mine have never been bothered . Love the prehistoric look they have

 

[Rickybobby]

mine at clove polyps and a toadstool!

 

[vetteguy53081]

Sea urchin got itself stuck between two live rocks so I helped it out. The spines caused a very slight itchiness on my fingers but otherwise I am okay. Live rock came from a southern Florida live rock aquaculturist.

Pencil urchin - I have Two