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The heavy food load and warm summer pond temperatures at Horsethief Canyon Native Fish Facility cause dynamic algae blooms which add dissolved oxygen to the water as photosynthesis occurs.
Photo: Brandee Keuer/USFWS
For more images by Jessi Kingan, visit Beneath The Surface Photography at beneaththesurfacephoto.com and Photo and Travel Blog at beneaththesurface.me
A bloom of Prorocentrum algae gives a brown tint to Spa Creek in Annapolis, Md., on March 16, 2012. (Photo by Caitlin Finnerty/Chesapeake Bay Program)
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Snow algae (Chlamydomonas nivalis), also known as watermelon snow or blood snow, was first thought to be meteorite dust. During a British expedition in 1818 to locate the Northwest Passage, Captain John Ross came across large patches of red snow near Greenland’s Cape York. It was incorrectly identified as iron-nickel meteorite detritus until Scottish Botanist, Robert Brown, suggested the red coloured snow could be due to an algae. Today there are over 60 known species of snow algae.
This is the algae I sampled today and from which the preceding micrograph in my photo stream was taken.
Photographed using a Sony Alpha 7R using a Nikkor PB-4 bellows and a Nikkor-Q 135mm f/4 bellows lens.
Drown, in the sea. Freshened with fresh rain drops or drenching splashes. Like swimming in the deep water.
Algae - Trentepohlia aurea v. polycarpa. This microscopic alga thrives on ocean salt spray and forms dense colonies on Monterey Cypress (Cupressus macrocarpa) along the Pacific coast. Despite its color, the species is actually a green alga. The chlorophyll pigment is masked by high levels of beta-carotene, the orange pigment found in carrots. Fitzgerald Marine Reserve. Moss Beach, San Mateo Co., Calif.