There is an area just east of New Orleans where the Pearl River flows carrying water towards the Gulf of Mexico. The area is swampy, a condition the river itself tends to help create. Like many rivers, as the water nears the mouth of that river it splits into channels. This divides the land between the various channels.
This area is partially in Louisiana, and partially in Mississippi. It is an area that attracts fishermen and hunters. Often bountiful crayfish catches have been made in the swamp. So, humans do enter the swamp.
When I was in my twenties there was a rash of sightings of what was called the Honey Island Swamp Monster. People would see fleeting shadows. Others would report deep claw scratching on trees. No one photographed the monster, but there were frequent reports of it. By frequent I mean annual.
Although I did much fishing and crayfishing in my twenties with my brothers, I never went into the Honey Island Swamp. We spoke of it, but had a fear. Our fear was not of the monster, but the state line is not clear, and the penalty for fishing in Mississippi with only a Louisiana license was enough to keep us away.
People offered possible animals that could have been mistaken as the monster. The area is home to wild boars, which can grow to a large size. Another possibility was the black bear, which could leave claw marks.
Well, for decades the monster has made little news. Younger people today may not have heard of the Honey Island Swamp Monster.