Portuguese man o' war
The Atlantic Portuguese man o' war lives at the surface of the ocean. The gas-filled bladder, or pneumatophore, remains at the surface, while the remainder is submerged. As the Portuguese man o' war has no means of propulsion, they move according to the winds, currents, and tides. Although they are most commonly found in the open ocean in tropical and subtropical regions, they have been found as far north as the Bay of Fundy, Cape Breton and the Hebrides.
Turkish draughts
"Men" move orthogonally forwards or sideways one square, capturing by means of a jump; they cannot move or capture backwards or diagonally. When a man reaches the back row, it promotes to a "king". Kings can move any number of empty squares orthogonally forwards, backwards or sideways. A king captures by jumping over a single piece any number of empty squares away, landing on any open square beyond the captured piece along a straight line.