4 Credits Interactions and relationships between living organisms and their environment in marine systems. Includes direct personal observations and investigations of intertidal, salt marsh, and estuarine habitats, invertebrates and vertebrates. Ecosystems studied include: coastal fisheries, open ocean, tropical seas and coral reefs, and polar regions. Focus is on examination of the terrestrial-marine interface, and influence of humans on these ecosystems. Three hours lecture. Four hours laboratory per week reinforces lecture topics, and is field intensive. Laboratory fee: $75. (LAS) (SI) Prerequisite(s):BIOL 117 - Introduction to Evolution and Kingdoms, CHEM 175 - Fundamental Chemical Principles I or CHEM 170 - Principles of Inorganic and Organic Chemistry or CHEM 170 - Principles of Inorganic and Organic Chemistry or permission of instructor. Other: Occasionally offered as an Honors course open to all students. Honors students with a minimum 3.25 GPA with a B or better in high school Biology need not meet the BIOL117 and CHEM170 prerequisites.