The last one was cracked by 'Anonymous', suspiciously close to a well-known dinoflagellate lab... it was a Warnowiid ocelloid, which is pretty much the coolest thing ever. I shall definitely blog about it someday. Been procrastinating with it because I'm not sure I can do it justice. In short, it's an image-forming camera eye...of a unicellular alga. If only these things weren't present at about one individual per cubic metre of seawater...argh!
Onto the next one. Tell me what's going on here:
The Litiopids: Small Sea-Snails among the Weeds
3 hours ago in Catalogue of Organisms