What's this invertebrate? Hawaii

[ThatsSomeBadHatHarry]

Found this little creature (with a few more with it) on the underside of a mooring ball hovering over about 80fsw on Oahu, HI. The ball itself was at about 20fsw about a 1/4mile from the coast. It's probably about an inch long and if you look closely, there are many, many smaller of the same thing growing on the ball as well all around it.

It seemed like the kind of filter feeder that would retract with changes to pressure/light change like a christmas tree worm. Thing wasn't skittish at all, though.

No idea what it is.
Anyone?

 

[donnyb]

"A little shrimplike animal standing on its head in a limestone house kicking food into its mouth":
a barnacle, this on appears to be a gooseneck barnacle, genus Lepas perhaps?

I have not seen one like it before here, but bear in mind a lot of exotics end up here after riding in the bilge water of ships as the cross the oceans.

 

[justleesa]

I've seen them on the mooring, but have no idea what they are....great pic and good question. Hope someone can answer!

 

[LeslieH]

Striped gooseneck barnacle, Conchoderma virgatum. It's found world wide in the tropics, attached to things like buoys, ships, offshore structures as well as the big oceanic species like whales, sunfish, and turtles.

 

[OceanObsessed]

Striped gooseneck barnacle, Conchoderma virgatum. It's found world wide in the tropics, attached to things like buoys, ships, offshore structures as well as the big oceanic species like whales, sunfish, and turtles.

Yeah, thats what I was going to say

 

[ThatsSomeBadHatHarry]

ah the ol' striped gooseneck barnacle.

thanks.