Thanks Seffie yeah I was aware of Zoas but didn't know about the capability to squirt quite so violently, but I always wear gloves anyway, safety specs, toe tectors, fluorescent jacket and hard hat from now on. I had an allergic reaction to the algae that grows on ropes when playing about in speedboats a few years ago. Was doing a sea survival course and showing people how to coil ropes and was exposed to it over a series of days, by the third day my hands were covered in red marks and really painful and aching. Turns out it was reaction to algae on the rope, now I always wear sealskinz gloves. (not I repeat not the skin of seal, although that would be nice and warm.........especially baby seal.....no?......okay I'll get my coat) I wear gloves that came out of anti swine flu kits, got hundreds of them, can't be too careful too many things that bite and sting.
P.S Don't think they're sundial closest I can find is Cerithium punctatum, the shell is more conical than a sundial.
P.P.S You are just too generous, so selfless, it warms the cockles of your heart to see such acts of kindness in an otherwise harsh and uncaring society.