Grey sponge?

[ssunthar]

Hi Experts, noticed this grey 'sponge' like thingy on LR (about 1.5cm in size) and realized that it is moving (very slowly.. like a cm every 2 - 3 days) and it changes its shape (like stretching) when it is on the move... sorry for the pic quality.

Is this a sponge and is it safe?
Thanks.

 

[Doctorgori]

I’d say anything faster or cheaper than a snail is safe...
Expensive and immobile livestock? I dunno.
I’m sure a glob of superglue will render it harmless ;Vulcan
joking and following :p

 

[ssunthar]

I’d say anything faster or cheaper than a snail is safe...
Expensive and immobile livestock? I dunno.
I’m sure a glob of superglue will render it harmless ;Vulcan
joking and following :p

Thanks Doctorgori... will keep an eye.

 

[Doctorgori]

pics not clear but it looks like a mushroom ... they move and stretch as you described

 

[ssunthar]

pics not clear but it looks like a mushroom ... they move and stretch as you described

I know what you mean, Im sure its not a mushroom...

and it stopped moving for a few days now.