GEOS 212 1st edition Lecture 25 Outline of last lecture LECTURE 24 OUTLINE Whales and Dolphins 23 April 2015 Types of whales baleen versus toothed Commercial whaling through time Present status of whaling Orca and Dolphins Echolocation Top predators Special adaptations intelligence communication skills strategies Video on baleen whales whaling Life in the Sea 20 00 31 35 5 08 to 16 39 2 traits of mammals Origin of whales when and why 2 kinds of whales 3 controls on where whales occur Prehistoric hunting of whales Early commercial hunting Modern commercial hunting What happened in 1986 Video on Killer Whales What are they hunting Size structure of each pod Use of sonar How communicate with each other Strategies developed to catch prey How many fish consumed per day Dolphin clips How does echolocation work Dolphin communication through aggression Swimming skills Outline of Current Lecture LECTURE 25 OUTLINE Deep Sea Hydrothermal Vent Communities 28 April 2015 These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Life Zones profile view Photic Twilight Dark Twilight zone 54 03 1 00 50 Sperm whale depth of squid Changes with depth Main strategy of most animals at depth Huge eyes why needed Why no hard body parts needed at depth Use of stinging cells Use of bioluminescence to avoid predation frombelow Dark zone 1 00 50 1 16 10 Why large eyes not needed at depth Predation strategy of Fangtooth Why is red color an advantage Another method of detecting prey Predation strategy of Gulper Eel How is bioluminescence produced 1 reason for bioluminescence 2 reason for bioluminescence Unusual mating strategy of male Angler Fish Blue headlights Advantage of red headlights 3 reason for bioluminescence depth charges What is the largest migration on planet and why does it occur Photic zone description Food source of most organisms that live below 150 meters Mid ocean ridge 1 31 15 1 36 43 Dimensions of MOR When explored for first time Temperature of water List of organisms seen at vents How is energy acquired Why is mobility required Potential origin of life on earth Current Lecture
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