[□=□ | □]
[word=□ | □]
[tag=□ | □]
Innovative research methods and persistent efforts , however , have begun to penetrate the depths to reveal tantalizing glimpses of the lives of these mammals in their natural habitats . This is easy to do for the first year , but gets increasingly difficult over time . Principally found in streams , it occurs in lakes less frequently . Range : This species is widespread in the Columbia and Fraser River systems , and also occurs in coastal drainages from Puget Sound to the Nehalem River . It occurs most frequently near stream outlets on muddy bottoms , and may occasionally enter coastal streams and estuaries . General Elections : Whenever an office becomes vacant or is scheduled to fall vacant , the Nomination Committee shall , through the Secretary , publish to the membership at least thirty days before voting occurs the name ( s ) of qualified individuals willing to serve who are members in good standing . Instructors are encouraged to cooperate with local media in development of " local interest " stories and articles that will be positive in their portrayal of Hunter Education . Principles of Animal Communication can be used as the basis for a general introduction to animal communication studies or , by focusing on specific sections , for more specialized and advanced courses . The book 's purpose is to dispel the temperate zone biologist 's ignorance of tropical biology and to stimulate more research on tropical birds . Range : The saddleback gunnel occurs along the coast from northern California to the Bering Sea and the Sea of Japan .