a large inland sea separating Greenland from the N.E. coast of America, and extending from 68° to 78° N. Lat., and from 52° to 80° W. Long. It was first explored in 1616 by the English navigator Baffin. It is connected by Davis's Strait with the Atlantic, and by Lancaster Sound and Barrow's Strait with the Arctic Ocean. The coasts are generally high and precipitous, and are deeply indented with gulfs. During the greater part of the year this sea is frozen, and is only navigable from the beginning of June to the end of September. It is annually visited by vessels engaged in the whale and seal fishery.