Sponge? Some kind of pest anemone?

[chilipopper]

Hey

Anyone have an ID for what's sitting under my green monti? Almost jet black in colour.

Edit: After googling around could it be elephant snail? If so - reef safe? never had one of these before so might have snuck in.

Cheers

 

[blaxsun]

Could you circle what we're supposed to be looking at?

 

[kjkszpj9]

if its the black thing then thats a keyhole limpet or elephant slug