EAPS 10400 Lecture Notes - Lecture 6: Anglerfish, Photic Zone, Bioluminescence

• School: Purdue University
• Department: Earth Atmospheric and Planetary Sciences
• Course: EAPS 10400
• Professor: Greg Michalski

Document Summary

Atmospheric pressure = 101 kpa = 1 atm. Every 10 meters of depth = 1 atm. At an ocean depth of 2300 meters the pressure would be ___. Fang fish (largest teeth in the ocean) Red pigments don"t exist in depths this low: animals use this as a form of protection against predators. At 1000 meters there is an abundant red light. Hairy angler fish = boney fish: motionless predator. Gulper eel = boney fish: can eat a meal at almost any size, large mouth. Symbiosis = close and often long-term interaction between two or more different biological species. Angler fish: light rod used to attract prey. Bioluminescence at red wavelengths = can see prey that is red. Squid covered in photophores: camouflage, attracting mates. To eat or mate: surface has photoplankton, diatoms, cyanobacteria. Marine snow = dead animal and plants that drift below: converted to co2 eventually. Only 3% of surface productivity reaches the continental shelf.