Today's animal is! Hespiornis. an early, and wholly flightless, bird highly adapted to a diving, similar to a loon. It had teeth towards the back of its mouth like many early birds. If, like loons, the ankle of the bird is embedded in the body wall than the animal could not have walked, and would have locomoted on land like a Phocid seal.
Artist is the wonderful john conway. http://johnconway.co/hesperornis-regalis