Howe Sound

With nearly 16,000 miles of rugged coastline and more than 40,000 islands and islets, British Columbia’s Howe Sound features fantastic marine life and spectacular coldwater scuba adventures. Stretching 27 miles from its narrow head under lofty mountain peaks at Squamish to its wide-mouth opening into the Strait of Georgia just northwest of Vancouver, Howe Sound is North America’s southernmost fjord. This sea-to-sky corridor crafted by glaciers and perfected by time seems tailor-made for subsea exploration — reef and wreck, rec and tech.

The kelp greenling ranges from Alaska to California and grows up to 2 feet long.

Connecticut: From the Shoreline

BETWEEN NEW YORK AND BOSTON LIES HARTFORD, the heartbeat of Connecticut. Visitors there can tour the Mark Twain House, Harriet Beecher Stowe Center, and the Wadsworth Atheneum Museum of Art. […]

dive sites in Connecticut an hour’s drive of Hartford, Connecticut’s shores are easy to access , Brownstone Quarry, Bigelow Hollow State Park, Diving Bigelow Pond, Brownstone Quarry, Stonington Point, Alert Diver magazine Q4 2023

Ripoff Reef

When I dive in an unfamiliar area, I tell the dive operator I want to start at their best spot — the site with everything. If I get bored with that, maybe I’ll try other sites. If you came to my home turf on the Kona Coast of Hawaiʻi Island and asked me for the site that has everything, I would send you to Ripoff Reef.

Hawaiian spinner dolphins often use the Honōkohau boat channel as a resting and socializing area.

The Great Lakes: Where Giants Sleep 

The inland seas of the five Great Lakes have a long history of tragedy and shipwrecks. Mariners who sail their waters know the dangers of autumn storms. Thousands of shipwrecks litter the bottom here due to errors in judgment, equipment failure, or simply being in the wrong place at the wrong time.

Kentucky Blues

Mammoth Cave National Park and other cave systems are part of a limestone belt that defines Kentucky’s landscape with its gently sloping bluegrass valleys. This geography made way for Kentucky to become the thoroughbred horse capital of the world and drive an economy built around events such as the Kentucky Derby. Beneath this limestone bedrock, a water supply often ranked No. 1 for water quality in the United States fuels well-known and developing dive sites that are surprisingly blue. 

Pennyroyal Scuba Park, van sunk in shallow

Port McNeill

A lifetime’s worth of superb diving awaits adventurous divers in the cool, current-swept waters surrounding British Columbia’s Vancouver Island.

diving through bull kelp

The Dry Tortugas

Seventy miles west of Key West, Florida, lies one of the most remote and beautiful national parks in the United States: Dry Tortugas National Park. Sitting isolated in the Gulf of Mexico, these islands mark the westernmost edge of the Florida Keys archipelago.

Fort Jefferson

Guardians of the Deep

The allure of underwater exploration is undeniable, drawing individuals into a realm of profound discovery and quiet, majestic beauty. For many divers, this fascination extends beyond vibrant marine life to the captivating remnants of human history hidden beneath the waves. 

A HADS diver photographs the coral-covered Mandalay

Washington’s Olympic Peninsula

The Olympic Peninsula, at the tip of Washington state, has impressive topography, stellar marine life, interesting rock formations and much more. Learn more about diving the Olympic Peninsula.

Several orca whales pop their fins out of water

Echoes in the Cold

Ancient beyond description and giant beyond comparison, Lake Superior’s cold and secretive depths hide a multitude of ships that prematurely ended their careers. The largest and farthest north of all the Great Lakes, Lake Superior is in a class by itself when it comes to preserving shipwrecks.

Ryan Staley