Where do scallops come from?

I'm curious to know, could you please elaborate on the origins of scallops? Are they harvested from specific regions of the ocean? Are there any environmental factors that influence their growth and abundance? I'm interested in understanding the entire lifecycle of scallops, from their habitat to their harvest. Could you also discuss any potential challenges or considerations in the scallop fishing industry, such as sustainability and conservation efforts? Thank you for your insights.