GEOS 212 1st Edition Lecture 24 Outline of last lecture LECTURE 23 OUTLINE Fish Fisheries and The Open Ocean 21 April 2015 Fish Life cycle eggs larvae juvenile adult Predator and or Prey Habitats Fisheries History Locations Management International Policy Characteristics of open ocean community Mostly low productivity downwelling Life in local areas of upwelling Need mobility to find and catch prey Need mobility to escape predators Video on open ocean community baleen whale feeding Open Ocean 4 40 9 55 0 00 5 08 Feeding strategy of marlin tuna 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 Strategy of sardines to escape predators Sei Whale feeding strategy Pattern of feeding over time Outline of Current 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 Current Lecture
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