Whirlpool of, a dangerous passage, about a mile in breadth, off the west coast of Argyllshire, lying between the south end of Scarba and the north point of Jura. It is named from a young Danish prince who perished there. Towards the Scarba side the sea is in almost perpetual tumult, arising from the narrowness of the passage through which the tide flows into and out of the sound of Jura. The turbulence of the water is also in part to be ascribed to the presence of a pyramidal rock rising with a rapid acclivity from the bottom about 100 fathoms down, to within 15 feet of the surface. By this interference the current is forced to assume various intricate directions; and, on the other hand, a counter current is produced, chiefly on the Scarba side, and its return into the main stream produces those gyrations, resembling the swells of Swinna and Strona, which have been magnified into a whirlpool capable of engulfing ships. It is only when high tides and violent winds prevail that the place assumes the frightful character so opposed to the security of vessels. The place is generally avoided, however, by boats and small craft.