NOAA says that this could also partly explain why blue holes are full of many different marine species including sponges, corals, turtles and sharks.
A "blue hole" 30 miles (48 kilometres) off Sarasota - known as "Amberjack Hole" - was explored in 2019.
A team of scientists, comprised of members of Mote Marine Laboratory, Florida Atlantic University, Georgia Institute of Technology and the U.S. Geological Society, is set to embark on a new mission to explore the hole beginning in August and continuing through May 2021, NOAA notes.More news: William Evanina, counterintelligenge chief, warns China, Iran, Russia trying to influence election
The organisation said there are countless blue holes scattered across Florida's Gulf continental shelf. Divers and a "benthic lander" were deployed to the bottom, 350 feet down.
Blue holes are basically sinkholes, similar to the ones found on land, the organisation added.
The Amberjack Hole is located approximately 34 metres below the surface and was found to be more than 70 metres deep.More news: Nascar races in Kansas tonight/on WBUT
Emily Hall, a staff scientist, and programme manager at Mote Marine Laboratory, who is a part of the expedition team, said: "This will be the first time that we get to characterise Green Banana, so we are very eager to see how that hole might compare (chemically and biologically) to Amberjack". And while marine scientists are captivated by their potential from a research perspective, laypeople seem pretty riveted by these sinkholes too. This movie shared with the Mote Marine Laboratory reveals explorations in the week of September 16, 2019.
In addition to searching for unique or new species during the mission, scientists are looking to explore the holes' role in the global carbon cycle, a possible connection between the sinkholes and Florida's groundwater, nutrient secretion from the hole that could be affecting the surrounding area and whether or not to make the holes protected areas. In fact, the first reports of blue holes do not come from scientists or researchers, but fishermen and recreational divers , " says NOAA in a statement. One of the animals was recovered to undergo a necropsy.
The team was also able to document nutrient flux from the bottom sediment into the water, suggesting that nutrients are coming up from the blue hole, fueling primary production above the hole, and in turn, a whole cascade of larger organisms.More news: Apple begins assembling iPhone 11 in India