Many otters were sleeping, rafted together, hooked into grasses, as we entered the deeper parts of the Slough. Heads and flippers up, the otters relax together. Other otters were already up and about as we floated into their world. Once the otters start fishing, they attract close companions.
Gulls fly in and get as close as they can, hoping to get a bit of something from the otter.
Looks like a carrot, but I'm betting it's a mussel. When near the otters, the gulls make the same cry they make as really young birds, calling to their parents for food.