Marine BiologyMarine Biology covers the basics of marine biology with a global approach, using examples from numerous regions and ecosystems worldwide. This introductory, one-semester text is designed for non-majors. Authors Castro and Huber have made a special effort to include solid basic science content needed in a general education course, including the fundamental principles of biology, the physical sciences, and the scientific method. This science coverage is integrated with a stimulating, up-to-date overview of marine biology. |
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Page 127
... Molluscs have been very successful : there are more species of molluscs in the ocean than of any other animal group . There may be as many as 200,000 species of mol- luscs , which are surpassed only by the arthropods as the largest ...
... Molluscs have been very successful : there are more species of molluscs in the ocean than of any other animal group . There may be as many as 200,000 species of mol- luscs , which are surpassed only by the arthropods as the largest ...
Page 129
... molluscs have a head that nor- mally includes eyes and other sensory organs . A feature unique to molluscs is the radula , a ribbon of small teeth that is used to feed , usually by rasping food from surfaces ( Fig . 7.20 ) . The radula ...
... molluscs have a head that nor- mally includes eyes and other sensory organs . A feature unique to molluscs is the radula , a ribbon of small teeth that is used to feed , usually by rasping food from surfaces ( Fig . 7.20 ) . The radula ...
Page 134
... Molluscs have a circulatory system that transports nutrients and oxygen . A dorsal , muscular heart pumps blood to all tissues . Most molluscs have an open circulatory system in which blood flows out of vessels into open blood spaces ...
... Molluscs have a circulatory system that transports nutrients and oxygen . A dorsal , muscular heart pumps blood to all tissues . Most molluscs have an open circulatory system in which blood flows out of vessels into open blood spaces ...
Contents
Part | 1 |
The Sea Floor | 19 |
The Geological Provinces of the Ocean | 33 |
Copyright | |
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algae animals archaea areas Atlantic bacteria barnacles biologists Biology Online Learning body bony fishes bottom called carbon cells cetaceans Chapter chemical cnidarians coast coastal common continental coral reefs crabs crustaceans cyanobacteria deep deep-sea depth detritus dinoflagellates dolphins earth eggs energy environment epipelagic estuaries eukaryotic feed feeders females FIGURE fins fisheries gametes gills groups humans hydrothermal vents intertidal invertebrates Islands kelp larvae layer live male mangrove mantle Marine Biology Marine Biology Online marine mammals marine organisms mesopelagic mid-ocean ridge molecules molluscs mouth mussels nitrogen nutrients ocean Online Learning Center organic matter oxygen Pacific particles photosynthesis phylum phytoplankton plankton plates polychaetes predators prey primary producers prokaryotes reproduction respiration rocks salinity salt scientists sea floor sea stars sea urchins seagrasses seawater seaweeds sediment sharks shell shore species sperm sponges squids surface swim temperature tide tissue tropical tunas turtles waves whales worms zone zooplankton zooxanthellae