by admin | Mar 26, 2024 | Instructor Manual, Snorkeling Instructor, Uncategorized
ENVIRONMENT AND SAFETY ENVIRONMENT I. Temperature and visibility. a) Cold Water: Temperature below 70°F/21°C. b) Thermocline: Sudden change in temperature in which a colder layer of water sits below a warmer layer of water. c) Differences between freshwater and...| Cookie | Duration | Description |
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