Blue thing under green staghorn branch

[Oropher]

hi folks

Please help to ID this alien on green staghorn. Thanks.

 

[Caseyoidae]

It’s hard to see in picture. Barnicle maybe?

 

[Oropher]

So sorry double post.

Because it's too far behind and really hard to ID from far, then I grabbed the colony and extract it. Turned out to be a gorilla crab.

 

[X-37B]

So sorry double post.

Because it's too far behind and really hard to ID from far, then I grabbed the colony and extract it. Turned out to be a gorilla crab.

Yea I can see the claw in the pic.
Good catch.