The tiny Assiminea succinea is one of my favorite semi-terrestrial, coastal snail species. If there were a contest to select the cutest snail, I would vote for it without a 2nd thought.
The shell of this snail was about 3 mm long.
Photographed with an Olympus E-500 with a 35 mm Zuiko lens + 25-mm extension tube; 1/160 s, f14, ISO 200; light was from an Olympus FL-36 flash; both the camera & flash were hand-held.
Despite the fact that Assiminea succinea lives by the sea and is classified as a "sea shell", it doesn't like being in the sea. I was able to demonstrate this to my own satisfaction with a simple immersion* test last week when I was in Florida. The experimental set-up consisted of a small plastic container containing sea water into which a slanted platform was placed.
I placed each of the 2 "volunteers" I had one at a time on the platform just below the meniscus and then watched them while timing them. Both crawled out of the water in about 8 minutes. They were slow crawlers and the surface tension that they had to break thru may have hindered their movements a bit.
Here is one of the little guys struggling to get out of the water.
One nice thing about staying with relatives was that I had a bathroom to myself that I turned into a snail lab and photo studio for the duration of the 5 days we were there. In a hotel room, on the other hand, I would have hesitated to leave my specimens, live snails and equipment around during the day.
The 2nd post about A. succinea is here.
*Immersion is not to be confused with emersion.