They are baby snails, still carrying what looks like a bit of yolk, but ready to go out into the wide world.
|The egg case is 1 cm. long; the baby snail is about 2.5 mm.|
|Stretching to turn itself over. I had just returned it to the tank, upside-down.|
|Two of the babies, out of the tank.|
Now, three hours later, another four have emerged, and there are several in the "birth canals", the pointed top ends of the egg cases. More are waiting inside.
The first three have gone on their ways. I don't see them anywhere;it's a big, busy tank, with many hiding places. And many dangers. I hope they have found safe havens.
And meanwhile, Ma and Pa are down on the bottom of the tank, pigging out on a rock full of barnacles that I brought them this Monday.