Biologic evolution

I think that it is the one that the crow shellfish had adhered to Asari's husk.
The crow shellfish doesn't understand the reason to do such a thing why.
Is not the string put why?
Why is a concrete object necessary yet?
It is not possible to understand.
It is not convincing.
Concrete objects were collected.
The object has signs in which it clung to the husk on careful survey.
It is because the shape of Asari's husk remains in respect of the object.
Did you cling when Asari was alive?
Or, did you cling to dying Asari?
Because the action in the sea is not observed, it doesn't understand.