Video clips

Planorbis 1

Planorbis 1
Play video:

Planorbis spec. - The transparent egg of an aquatic snail in a gelantine string of sprawn. The motile embryo is already carrying a tiny shell through which the beating heart is visible.

Planorbis 2

Planorbis 2
Play video:

Planorbis spec. - Young animal (2 mm size!) is "grazing" on the stalk of a waterplant.

As its shell is still transparent you can have a look at the pumping heart, the loops of the bowels, the scratching radula, and two little black eyes at the bottom of the horns.