Block Island Sound is a strait in the open Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

, approximately 10 miles (16 km) wide, separating Block Island

Block Island

Block Island is part of the U.S. state of Rhode Island and is located in the Atlantic Ocean approximately south of the coast of Rhode Island, east of Montauk Point on Long Island, and is separated from the Rhode Island mainland by Block Island Sound. The United States Census Bureau defines Block...

 from the coast of Rhode Island

Rhode Island

The state of Rhode Island and Providence Plantations, more commonly referred to as Rhode Island , is a state in the New England region of the United States. It is the smallest U.S. state by area...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Geographically, it is the eastward extension of Long Island Sound

Long Island Sound

Long Island Sound is an estuary of the Atlantic Ocean, located in the United States between Connecticut to the north and Long Island, New York to the south. The mouth of the Connecticut River at Old Saybrook, Connecticut, empties into the sound. On its western end the sound is bounded by the Bronx...

, as well as the westward extension of Rhode Island Sound

Rhode Island Sound

Rhode Island Sound is a strait of water, off the coast of the state of Rhode Island at mouth of Narragansett Bay. It forms the eastern extension of Long Island Sound and opens out the Atlantic Ocean between Block Island and Martha's Vineyard....

.

Block Island Sound in pop culture

Block Island Sound is mentioned in singer Billy Joel

Billy Joel

William Martin "Billy" Joel is an American musician and pianist, singer-songwriter, and classical composer. Since releasing his first hit song, "Piano Man", in 1973, Joel has become the sixth best-selling recording artist and the third best-selling solo artist in the United States, according to...

's song Downeaster 'Alexa

The Downeaster Alexa

"The Downeaster 'Alexa" is a song originally released in 1989 on Billy Joel's eleventh studio album Storm Front. The album itself went to number one while the fourth single "The Downeaster 'Alexa'" placed at #57 in the Billboard Hot 100. The song was included on Billy Joel's Greatest Hits Vol...

, about the plight of fishermen off Long Island, New York.