This video from the USA is called Habitat Exploration: Deep-Sea Corals.
From Wildlife Extra:
New coral species discovered off the coast of California
Scientists on a mission led by National Oceanic and Atmospheric Administration (NOAA) have made new discovers in waters off California’s coast, including a new species of deep sea coral and a nursery area used by both catsharks and skates.
The research was a result of the first intensive exploration of the areas north of Bodega Head, which took place in September 2014 aboard NOAA’s R/V Fulmar. The team of scientists focused on two main sites: the head waters of Bodega Canyon, and an area known as ‘the Football’ west of Salmon Creek and north of the canyon, so-named for its oval shape.
While investigating in these areas, the researchers discovered a new species of deep sea coral, and a nursery area for both catsharks and skates located in the underwater canyons close to the Gulf of Farallones and Cordell Bank national marine sanctuaries off Sonoma coast.
The team of scientists undertook multiple dives during which they made the discovery of hundreds of skate egg cases on the sea floor, and in bundles on rocks surrounding a catshark nursery area.
Commenting on this finding, deep sea biologist at NOAA’s National Centers for Coastal Ocean Science Peter Etnoyer said: “This is a highly unusual nursery because rarely, if ever, are shark nurseries in the same area as skate nurseries.”
The significant discovery of the new coral species was made by the second team to embark on the mission, led by California Academy of Sciences’ Gary Williams. His team found corals at around 600 feet deep and confirmed them to be a new species of deep sea coral. “Deep-sea corals and sponges provide valuable refuge for fish and other marine life,” said Maria Brown, Farallones sanctuary superintendent. “Data on these life forms helps determine the extent and ecological importance of deep sea communities and the threats they face. Effective management of these ecosystems requires science-based information on their condition.”
The mission was also significant for being the first time that video surveys were recorded in the area. Previously this region had only been documented through sonar imaging.
“The video surveys from this research mission verified the extent of rocky habitat estimated from sonar data collected several years ago, and the quality of rocky habitat in some areas exceeded expectations.” says US Geological Survey geophysicist Guy Cochrane.
The scientists used small submersibles in their investigations along with other innovate technologies, documenting the marine life that has adapted to survive in offshore waters reaching depths of 1000 feet by filming and photographing it. Prior to this research, scientists knew little about these areas except they were thought to contain nutrient-rich and biologically diverse marine life.
“Surveys of the seafloor in these waters reveal an abundance and diversity of life in new habitats,” commented Danielle Lipski of the Cordell Bank National Marine Sanctuary. “This work helps inform our knowledge and understanding of the deep sea ecosystems north of Cordell Bank and Gulf of the Farallones national marine sanctuaries, areas that are extremely important to the ocean environment.”