Maybe their tails trailed in the mud bottom to serve as anchors.

TheSissie 'd cooked the basin's mud bottom while setting down.

This snail is found in lakes and slow-moving rivers with mud bottoms.

"The only alternative's to drain the slip, and the mud bottom makes that problematic."

Bottle green and clear down ten feet to eelgrass waving gently on a mud bottom.

It is a demersal fish that lives on saltwater sand and mud bottoms.

I thought he had wedged himself into a shallow mud bottom.

It creates burrows in the mud bottom on which it lives.

It was low tide, so the flat mud bottom lay just five feet below the keel.

The Big Muddy has a mud bottom for most of its length.