ID Help snail/worm and sponge

T3D · 02/09/2018, 05:37 AM

Hello,

I have a few of these things on the rock. I see them at night. I once saw one on glass that looked like a seal. theres a dark center spot on these white circles. They are very small. maybe less than 1/8 inch. Are these dangerous and should I get rid of them?

Also I have these green sponge type materials Any idea on how to id these as well?

Thanks

T3D · 02/09/2018, 05:38 AM

I meant snail not seal. Couldn't edit post

ReefkeeperZ · 02/09/2018, 05:46 AM

the first is a limpet, pretty cool hiker as long as it's not a keyhole limpet (which it does not appear to be), the sponge is a sponge, species of poriferans are typically difficult to ID without a microscope and more knowledge than I posses but that yellow/green guy is pretty common in tanks and I love the look of them. but simply a beneficial filter feeder.

homer1475 · 02/09/2018, 06:34 AM

Don't think its a limpet, possibly a stomatella snail.

Either one is good for your tank.

T3D · 02/09/2018, 06:35 AM

Quote:

Originally Posted by ReefkeeperZ

the first is a limpet, pretty cool hiker as long as it's not a keyhole limpet (which it does not appear to be), the sponge is a sponge, species of poriferans are typically difficult to ID without a microscope and more knowledge than I posses but that yellow/green guy is pretty common in tanks and I love the look of them. but simply a beneficial filter feeder.

Thank you!

ReefkeeperZ · 02/10/2018, 05:09 AM

Quote:

Originally Posted by homer1475

Don't think its a limpet, possibly a stomatella snail.

Either one is good for your tank.

I must respectfully disagree.
stomatella are shaped like a rounded fingernail, limpets are teepee shaped.
Stomatella

Limpet

02/09/2018, 05:46 AM	#3
ReefkeeperZ Registered Member Join Date: Apr 2015 Posts: 392	the first is a limpet, pretty cool hiker as long as it's not a keyhole limpet (which it does not appear to be), the sponge is a sponge, species of poriferans are typically difficult to ID without a microscope and more knowledge than I posses but that yellow/green guy is pretty common in tanks and I love the look of them. but simply a beneficial filter feeder. __________________ insert witty catchphrase here

02/09/2018, 06:34 AM	#4
homer1475 Registered Member Join Date: Mar 2015 Location: Upstate NY Posts: 5,313	Don't think its a limpet, possibly a stomatella snail. Either one is good for your tank. __________________ 80G SCA Build: http://reefcentral.com/forums/showthread.php?t=2560256 Originally posted by der_wille_zur_macht: "He's just taking his lunch to work"

02/09/2018, 05:38 AM	#2
T3D Registered Member Join Date: Jun 2005 Posts: 19	I meant snail not seal. Couldn't edit post