Crocea's mantle tilted toward light

[SpetsnaZ]

i got my crocea yesterday and today in the morning its mantle was tilted at about a 45 degree angle toward the light
i'm assuming that it means that it needs more light, but i'm not sure
please help and tell me what i should do
(this is my first time kepping clams so please don't get mad)

 

[jasper24]

What type of lighting?

 

[Drewpy]

I would let the clam do what he wants as long he isn't falling off a rock or anything like that...