Mandy Knott I know it's not the best photo to ID from but can anyone help confirm this please? Is it Haliclona oculata from an odd angle - this species was abundant at this site, or am I missing something?
Mandy Knott Thanks Dawn. It was different to the rest of them and initially from my photo I wasn't sure if there was a large terminal oscule. A photo on http://www.habitas.org.uk/marinelife/index.html
Mandy Knott threw me a bit - Haliclona urceolus...
Maria Harwood I don't suppose "pointy thngy" is the kind of description you had in mind?
Erling Svensen From yesterdays dive. I saw many Jorunna tomentosa - some eating sponge, but also some on the tine green algae. Any clue what they do on the algae? Maybe like the dogs - they eat grass for their stommac ;-)
Tony Gilbert A good point. Perhaps they off-gas on other marine life. Is the sponge a Haliclona oculata, which I think is their food source. They do seem to hack this down very quickly!
http://www.flickr.com/photos/tonyjgilbert-images/6914276366/in/set-72157629775691515