Urchin "teeth" are kinda terrifying

[rhdoug]

I've kept urchins on and off for years for algae control. I never knew they had teeth like this...

In case the video doesn't work...

https://youtube.com/shorts/NauQ94iW2CA?feature=share

 

[Miami Reef]

I've kept urchins on and off for years for algae control. I never knew they had teeth like this...

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Neither have I until now! Interesting.

 

[Hairyteeth]

Love watching them eat

 

[mindme]

I wouldn't put my finger in their beaks that's for sure. Mine do the same thing in my 29g. It only has a hob skimmer, nothing for the surface. So they'll flip themselves and eat the film.

Works for me

 

[CoralB]

They do do a number on algae !!! Ha!!! I just realized I said dodo on this site oops!!

 

[Garf]

Those don’t appear to be algae eating teeth, which is odd. Dunno