Nospherith
Fishaholic
http
/magma.nationalgeographic.com/ngm/05...ure5/index.html
This month's National Geographic Magazine featured a story about the color of tropical reef systems.
"Absorbed by water molecules, plankton, and debris, the longer wavelengths of red dissipate at about 30 feet of vertical depth and horizontal distance. Shorter wavelenghts of blue scatter widely, one reason why oceans look blue."
They show two pictures side by side of a reef at a depth of 80ft. One picture shows a reef with a dazzling conglamoration of every color in the rainbow taken with a submerged strobe light. The same reef, with no strobe light is just blue. Red and yellows appear as black at that depth and blues blend in with the reef. This is why tropical reef fish can be so colorful and at the same time avoid predators. (And consequently why the reefers have "actnic" lights.)
It's a really interesting read and it's worth a look.
/magma.nationalgeographic.com/ngm/05...ure5/index.htmlThis month's National Geographic Magazine featured a story about the color of tropical reef systems.
"Absorbed by water molecules, plankton, and debris, the longer wavelengths of red dissipate at about 30 feet of vertical depth and horizontal distance. Shorter wavelenghts of blue scatter widely, one reason why oceans look blue."
They show two pictures side by side of a reef at a depth of 80ft. One picture shows a reef with a dazzling conglamoration of every color in the rainbow taken with a submerged strobe light. The same reef, with no strobe light is just blue. Red and yellows appear as black at that depth and blues blend in with the reef. This is why tropical reef fish can be so colorful and at the same time avoid predators. (And consequently why the reefers have "actnic" lights.)
It's a really interesting read and it's worth a look.
Very interesting.
