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UNDERWATER HABITAT
In 2025, Miami sank 22 concrete cars beneath the Atlantic; what looks like an underwater traffic jam is actually a giant artificial reef for 2,200 coralsBeneath the waves off Miami Beach, a striking collection of 22 concrete cars lies submerged, serving as artificial reefs that support coral...
In 2006, volunteers lowered a stripped Boeing 737 into the Pacific; 20 years later, the jet has become a cold-water artificial reefA retired Boeing 737 now rests on the seafloor off Vancouver Island. This aircraft was transformed into an artificial reef by Canada. The X...
In June 2026, two tiny eyeless creatures smaller than sesame seeds were discovered in Japan’s hidden groundwater caves, scientists say the discovery could point to a much larger underground worldThe discovery does not prove that the Ryukyu Islands are home to countless undiscovered species living underground. However, it highlights ...
In 1986, Florida sank this 189-foot ship off the Florida Keys; decades later, its stripped superstructure is covered in sponges, corals and hydroidsThe Thunderbolt, a former military and research vessel, now serves as an artificial reef off Marathon in the Florida Keys. It was intention...
In 1997, scientists strapped cameras to sperm whales to find giant squid. 7 years later, researchers finally filmed the elusive monster aliveA giant squid once lived mostly in legend. Scientists had scars, tentacles and dead specimens. They lacked clear footage of the animal aliv...
In 2023, the JOIDES Resolution drilled 4,160 feet beneath the Atlantic seafloor at Atlantis Massif. 3 years later, scientists found water carrying a 572°F chemical memory, revealing a possible pathway feeding Lost City’s deep-sea ecosystemThe discovery beneath Atlantis Massif reveals how Earth’s geology, water and deep-sea life are interconnected. The 4,160-foot drilling oper...
In 2021, Cyprus submerged 93 sculptures to create an underwater forest; concrete trees rise from the seabed at different depthsAn underwater sculpture park in Cyprus offers a unique habitat for marine life. This art installation, MUSAN, features concrete figures and...
In 2023, Georgia sank two retired Atlanta commuter trains; seven months later, divers found corals, fish, and other marine life colonizing the railcarsRetired MARTA train cars were sunk off Georgia's coast to create new reefs. Divers found marine life and coral growth on the cars within se...
In 2019, Jordan sank 19 military machines in the Red Sea, turning retired tanks, cannons, an ambulance, and a combat helicopter into an underwater museum and artificial reefJordan's Aqaba hosts a unique underwater military museum featuring decommissioned vehicles. These sunken machines now serve as artificial r...
In 2016, Turkey deliberately sank an entire Airbus A300, turning a passenger jet into an artificial reef, 75 feet below the surfaceA decommissioned Airbus A300 was deliberately submerged off the coast of Turkey to enhance diving tourism and safeguard marine ecosystems. ...
In 1982, Delaware’s former tanker was built for a life at sea carrying oil. 44 years later, the vessel was deliberately sunk off Delaware’s coast, beginning a second life as an artificial reef for marine speciesThe Calcasieu Pass vessel, constructed in 1982 for oil operations, has made a remarkable transition to become a key component of Delaware's...
Since 2016, the Netherlands has used 37.2 million tonnes of lakebed sediment to build seven wildlife islands covering 1,300 hectaresIn the Markermeer region of the Netherlands, innovative artificial islands have been crafted using dredged materials from the lakebed. The ...
In 2011, USGS researchers began studying Lake Erie's fish and seasonal hypoxia across a multi-year project. 15 years later, the findings showed fish crowding areas near 2–3 mg/L oxygen, revealing an unexpected shift at the edges of low-oxygen zonesLake Erie’s seasonal hypoxia is changing where fish gather. For years, scientists watched oxygen levels fall and fish move around the lake....
Between 2001 and 2010, more than 2,500 New York subway cars were sunk into the Atlantic — decades later, they have become a thriving underwater reefA fleet of old subway cars from New York City has found an unexpected second life at the bottom of the Atlantic Ocean. Sunk off the Delawar...
Key Largo used a sealed underwater habitat 22 feet below the surface to test prolonged human immersion; the result revealed a startling effect as a professor emerged after 100 days with his spine compressed and his height reduced by half an inchJoseph Dituri spent 100 days underwater in a 100-square-foot habitat near Key Largo, Florida. The extreme experiment changed more than his ...
In 1970, Sylvia Earle led five women into an underwater laboratory on a 14-day mission that helped strengthen the case for women in extreme-environment scienceThe year 1970 marked a groundbreaking moment when five female aquanauts embarked on a 14-day journey under the sea in the Tektite II projec...
Britain used discarded seafood waste and engineered reef habitats to solve the collapse of native oyster ecosystems; the result transformed lifeless seabeds into thriving underwater habitats capable of supporting oysters, fish, and countless marine speciesBritain is deploying concrete reef cubes and scallop shells to revive native oyster populations. These structures aim to provide essential ...