Identifying?

[Torontotraders]

Hello, does anyone have any idea what these mushroom looking things are? Just starting out with my 160 gallon and was thinking about purchasing a small quarantine tank which had these in it. Any help would be appreciated. Thanks in advance.

 

[Tahoe61]

Brown or green palys. The can be toxic when manipulated/handled.

 

[Torontotraders]

Yea no! I’ll look for another quarantine tank. Thanks for the info.