Biologic evolution

Own rebuttal to vision at corbicula's standing position.

Other shellfishes of the corbicula in case of reference.
The state in sand of hunting?
It is in sand in the direction opposite to yesterday's corbicula.
Please look at an actual photograph.

The littleneck clam exists in a position quite opposite to the
imagination of the standing position in corbicula's water.

How of the water pipe for the expansion has reversed, too.
This that enters sand is also opposite to corbicula's standing
position Caita.

At the standing position in corbicula's surface of the water
There is considerably a doubt whether the corbicula can grow.
Point that Caita is not attached to sand.
How do you move?
It is not easy to think the reliance only of the flow of the river
and the movement.
When it is the same, the water pipe is ..idea.. profitable functional
the littleneck clam and the corbicula.

Difference between estuarine water (corbicula) and seawater
(littleneck clam).
This? might