ID help

[Javier]

Hi,

Not exactly a microbe, but my niece found this sort of rock in the beach. I have not a clue of what it might be, but it seems interesting. Does anyone happen to know what this is?

IMG-20220712-WA0007.jpg (173.69 KiB) Viewed 1274 times

[viktor j nilsson]

A member of the group of flat, burrowing sea urchins known as sand dollars, Clypeasteroida.

[apochronaut]

Perhaps a type of Limpet shell. There is something called a Keyho!e Limpet that has a hole or slit in it's shell.

[Javier]

Awesome, I just looked a short video about them. Amazing nature!

Thanks for your help!

[apochronaut]

You think that might be whst it is then? Odd arrangement of slits. Quite symmetrical

[viktor j nilsson]

As I said above, it's a sand dollar. Specifically, a keyhole sand dollar, i.e. one of three species in the genus Mellita.

https://en.m.wikipedia.org/wiki/Keyhole_sand_dollar

[Javier]

As I said above, it's a sand dollar. Specifically, a keyhole sand dollar, i.e. one of three species in the genus Mellita.

https://en.m.wikipedia.org/wiki/Keyhole_sand_dollar

Yes, I was confirming this. I did not see Apo's message when posting my reply. This is hand down a test from a sand dollar.

Thanks both for your inputs!