Because of the toxic sludge that covered the floor of the oceans, the massive ancient creature Brostul rose from the unknown depths. The creature had evolved a natural form of life preserver, an air-filled bulge around its body, so it could stay afloat and away from the horrible deep waters.
ABILITIES:
Wallow: emits pitiful moan that causss misery in sailors
Air Leak: can intentionally let some air out of its 'life preserver' to move fast across the ocean
Giga Inflate: can increase size of 'life preserver so creature becomes harder to attack