Dr. Beach's Survival Guide: What You Need to Know About Sharks, Rip Currents, and More Before Going in the Water.STEPHEN P. LEATHERMANAs beach season begins, Leatherman provides a short but complete guide to peach safety. He scientifically and sensibly addresses beach hazards explaining which should be of greatest concern and how to minimize risk. Among the questions asked and answered here are: What is the danger of red tide red tide: see Dinoflagellata. red tide Discoloration of seawater caused by dinoflagellates during periodic blooms (population increases). Toxic substances released by these organisms into the water may be lethal to fish and other marine life, and ? Which U.S. beach records the most shark shark, member of a group of almost exclusively marine and predaceous fishes. There are about 250 species of sharks, ranging from the 2-ft (60-cm) pygmy shark to 50-ft (15-m) giants. They are found in all seas, but are most abundant in warm waters. attacks each year? How can rip tides rip tide n. See rip current. be avoided? and Is a stingray stingray: see ray. stingray or whip-tailed ray Any of various species (family Dasyatidae) of rays noted for their slender, whiplike tail with barbed, usually venomous spines. dangerous? Yale U Pr, 2003, 106 p., b&w photos/illus., paperback, $9.95. |
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