This week I’m giving you a mystery object that I think will be fairly straightforward to identify, although it might take a few attempts to get the right species:
Let me know what you think in the comments box below – I’ll do my best to reply to any questions. Good luck!
Zygoma 
Skin ?
Sort of…
I thought it was a coral of some sort at first, but now I’m thinking carapace.
Sort of… as well
Some kind of scales?
Sort of… but not quite
echinoidea?
Chordata
Looks like skin. Several beasties have hexagonal/heptagonal scales. I’ll discount stegosaurus on account of the (metric) scale. Something like a Cowfish, perhaps?
😉
my friend Alison says boxfish skin.
Your friend Alison isn’t bad at this!
Alison’s mathematician’s brain said, “This is spherical, because it is made up of pentagons and hexagons”, and her naturalist’s brain remembered seeing something similar swimming around in a brackish aquarium at a local garden centre.