Fishblight Mire suck it up

One eye peeled back as he watched her struggle. She'd never get out of the mud at that rate. There was a trick to it, but it appeared as though she hadn't considered the option that would spring her free of the mucky mire. He wondered if she'd eventually figure it out or if he'd have to help her discover it first.

Still, he feigned disinterest and sleeping while she struggled. Then she went still. His ears betrayed his antics, lifting upon his head as they swiveled first towards her and then towards the bubbling swamp. Well that wasn't good. His head lifted, nose scenting and eyes peering as he tried to get a visual on their new arrival. Nothing. The marine creature was safe within the waters of the bog. Invisible to everything above it's surface.

"Sit on your ass, your feet will come free." Spread her body weight over the mud and the more evenly dispersed surface pressure would help her paws would slip right out of there. Lifting to his own feet, he moved towards the edge of the log and peered out over the swamp. What was it?