ADELAIDE: Clean Seas Seafood Limited (ASX: CSS) announced on Wednesday that it has received a non-binding merger proposal from Yumbah Aquaculture Ltd. The deal, which would see Yumbah acquire 100% of Clean Seas shares, offers shareholders $0.14 cash per share or a scrip alternative in Yumbah.* Yumbah, an Australian-owned shellfish aquaculture company, operates across South…