underwater visibility
How far divers see
Underwater visibility is how far you can see clearly beneath the water's surface.
Divers and snorkelers check visibility conditions before entering the water: Visibility was about thirty feet at the reef today.
Visibility varies with sediment, algae, currents, and light conditions.
Poor visibility makes diving more dangerous and less rewarding.
- scuba divingSwimming with air tanks
- sonar imagingSound-wave underwater detection
- turbidityCloudiness from suspended particles
- crystal clearEntirely unambiguous, perfectly understood
- marine navigationDirecting vessels across water
photometers · bioluminescence · diving masks · current flow · sedimentation · refractometers · hydrophones · environmental monitoring · particulate matter · murky · snorkeling · night dive · dive site · coral reef · aquarium · plankton · spectrophotometers · spectrophotometers
- scuba divingscuba, regulator, BCD, scuba diving, wetsuit
- ocean lightsunlight, light absorption, blue light, green light, irradiance
underwater, visibility, under, water, visible, invisible, visibly, invisibly, vision