Oyster reef restoration projects often place the sanitized shells of dead oysters, concrete, or limestone pieces on a soft bottom to encourage oyster spat settlement . increase nutrient sequestration and dentrification rates, increase nekton biomass, and potentially increase commercial fishery value.
32.
"' Project Nekton "'was the codename for a series of very shallow test dives ( three of them in Apra Harbor ) and also bathyscaphe " Trieste " entering the Challenger Deep, the deepest surveyed point in the world's oceans.
33.
"Trieste " departed San Diego on October 5, 1959 for Guam aboard the freighter " SS Santa Mariana " to participate in " Project Nekton ", a series of very deep dives near Guam, culminating in a descent to the Mariana Trench.
34.
Though it was originally thought that the host to which it attaches for transport gains nothing from the relationship, research indicates that hosts also benefit, given that remoras feed on parasites ( such as copepods ) and clean sloughing epidermal tissue as well as ingesting scraps of food, feces, and small nekton and zooplankton.
35.
In January 1960, for example, she served as communication relay and support ship for the bathyscaphe " Trieste " in Project Nekton; she towed the bathyscaphe some 260 nautical miles ( 482 kilometers ) from Guam to the vicinity of the Challenger Deep, where, on 23 January 1960, " Trieste " descended to a record 37, 000 feet ( 11, 278 meters ).
36.
On dive 65 ( 8th in the Nekton series ), on January 23, 1960, " Trieste " reached the ocean floor in the Challenger Deep ( the deepest southern part of the Mariana Trench ), carrying Jacques Piccard ( son of the boat's designer Auguste Piccard ) and Lieutenant Don Walsh, USN . This was the first time a vessel, manned or unmanned, had reached the deepest point in the Earth's oceans.
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