This is a list of the longest-living organisms that includes oldest individual bioforms. This is usually defined as: ( 1 a) Having a longer life-span than any other known individual species (such as the Methuselah tree) OR. The Jurupa Oak colony is estimated to be at least 13,000 years old, with other estimates ranging from 5,000 to 30,000 years old. 2  A huge colony of the sea grass Posidonia oceanica in the Mediterranean Sea is estimated to be between 12,000 and 200,000 years old.
Greater abundances of solid particles in the water will decrease the depth of light penetration. Therefore, water near the seashore that is more turbid (cloudy) due to particles will show a decrease in light transmission, even in shallow water.
Best Answer: man has been ALMOST to the deepest point in the sea Most parts of the ocean are about 5 kilometers (3 miles) deep. However, deep ocean trenches can be as much as 11 km (7 miles) deep. The deepest point in the world's oceans is the Challenger Deep, in the Marianas Trench; its depth is 11.03 km (36,200 feet). In 1953, the bathyscaphe (bathy = deep, scaphe = ship) Trieste descended to 35,800 ft (10.91 km) in the Challenger Deep.