FAQs about Sea Squirts Identification 6
Related Articles: Sea Squirts/Tunicates/Ascidians,
Ascidian/Sea Squirt ID 1,
Sea Squirt ID 2,
Sea Squirt ID 3, Sea Squirt ID 4, Sea Squirt ID 5,
Sea Squirt ID 7, Sea Squirt ID 8,
Ascidian Disease, Ascidian Reproduction,
floating eggs? 4/23/16
I came across a floating egg case in about 60ft
of water on surface( south side of Maui). The eggs were
black and resembled Cane Toad eggs but these were in arranged in a tube
about 3ft in length by 12in in height. Sorry I didn't think to
take pic but any ideas on identification? Thanks
Re: floating eggs?
Thank you Bob. It does appear to a Salp chain, it was my first encounter
and thanks again for the info.
<A practice guess. No fish egg rafts fit the description... the colonial
ascidians do. BobF>
Strange growth? 10/11/15
Hello there. Just want to firstly thank you for the wealth of information you
share here. You are my number one spot to research everything. Now, for my
question. I have a 55 gallon salt water tank that has a cluster of mussels (no
longer living) which I collected from the ocean (Atlantic coast
There is a very strange, but beautiful growth spreading slowly on it and I'm not
even sure what to search to try and identify it. Could you help?
<Yes; this is a colonial Ascidian... the "Flat Tunicate", Botrylloides nigrum >
The picture is taken close up, the grow is about the size of a dime currently.
Any help would be greatly appreciated. Thank you!
<Cheers, Bob Fenner>
Strange growth? 10/12/15
Thank you so much!
<Ah welcome. Thank you for sharing. BobF>
Growth on Hammer Coral 8/14/15
Hello and thank you so much for all the valuable information you guys provide.
I have been reading and researching on your site (and others) for several years
now and this is the first time I have posted a question. In April I upgraded my
tank from a 75 to a 180 gallon mixed reef tank.
Things are going very well, but today I noticed an unusual growth on the side of
my hammer coral. The hammer is usually fully extended, growing nicely and is
very beautiful. Today I turned my lights off while acclimating a new chalice
coral and a maxima clam and as a result of the lights being off the polyps
retracted on my hammer and I saw this large growth on the side of its skeleton.
I have looked online and the only thing I can find as a possibility are the
vermetid snails, but the pictures I can find don't really look anything like
what I see on my hammer. I am attaching a picture and was hoping that you will
be able to tell me what in the world this is and how I can get rid of it. Thank
you again. Any advice will be greatly appreciated.
<The reddish bit? Tis an Ascidian, A Sea Squirt... unless it's physically
bugging the Euphyllia, I'd leave it... interesting animals; not harmful; and
indicative of good conditions, care on your part. Bob Fenner>
full size pic
Re: Growth on Hammer Coral 8/14/15
Oh my, what a relief! I was thinking the worst. It doesn't seem to be bothering
the coral in the least and when my lights are on the hammer is so extended that
the sea squirt is completely hidden. Thanks again!
<Ah, welcome! BobF>
Can you identify this? 5/3/15
Hello! I started finding this in my tank a few months ago. The kinda look like
eggs but nothing seems to hatch. Seems to spread quickly.
<Ahh; very nice. These are colonial Ascidians; Sea Squirts. Indicative of good
conditions in your system. Not harmful.
Re: Can you identify this? 5/4/15
Thank you! I really appreciate it! I have looked in so many books and couldn't
Re: Please help identify this please 4/28/15
Thank u for your help can u help me one more time please I bought a colony of
star polyps and found this it's soft and has 2 protruding what looks likes
mouths that retracts when touched I thought maybe a sponge of some kind thanks
for any help
<Mmm; two mouths, retracts when touched... my guess is that
this is an Ascidian/Sea Squirt of some sort. Not harmful; in fact indicative of
good care, conditions. Bob Fenner>