Block Island Sound, Strait in southern New England, US
Block Island Sound is a strait in southern New England separating Block Island from the Rhode Island mainland. This waterway connects Long Island Sound to Rhode Island Sound and serves as a major passage for shipping and recreation.
A Dutch expedition led by Adriaen Block discovered and mapped this waterway in 1614, giving it its current name. The passage then became a key route for early European navigation and trade along the Atlantic coast.
Three United States Navy vessels received their names from this body of water, reflecting its importance in American maritime heritage.
Boats and ships use this passage throughout the year, with peak activity during warmer months when recreational boating is most common. Visitors should be aware of local tidal patterns and seasonal conditions that affect water characteristics and navigation.
The waters contain protected marine species, including loggerhead turtles, leatherback turtles, and multiple dolphin populations that inhabit these Atlantic waters.
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