An eddy is best defined as which of the following?

• A. A rapid moving current
• B. Calm area behind obstruction
• C. A swirling whirlpool
• D. A strong forward current

Answer: (B)

An eddy is a sheltered pocket of water formed when the main current flows around an obstruction. As water splits and flows past the obstacle, a portion of it can recirculate behind the obstruction, creating a calm area where the surface water moves more slowly and may even run opposite to the main current. This calm pocket behind the obstacle is what kayakers use to pause, maneuver, or reposition. It isn’t a rapid, forward-moving current, nor a swirling whirlpool, so those options don’t describe the typical eddy.