Port Douglas, also referred to as Coffin Bay, is a coastal bay forming part of the Lower Eyre Peninsula coastline in South Australia. It is characterized by shallow, warm waters with a white sandy bottom and crystal-clear water, contributing to a picturesque aesthetic. The bay's ecosystem includes patchy mangroves. The area is a hub for oyster farming, with specific locations such as Farm Beach, Little Douglas, and Long-Nose being visible from the oyster leases. This commercial activity, along with the presence of fishermen and tour boats, indicates that paddlers will share the water with other vessel traffic. The waters are shallow most of the time, which is a key consideration for paddlers regarding potential grounding and the effect of wind on wave generation. The bay is considered beautiful across all four seasons.