Look for a narrow channel of churning, choppy, or foamy water
Watch for a gap in breaking waves
Notice water moving steadily away from shore
Identify a line of seaweed, foam, or debris moving seaward
Look for a difference in water color compared with nearby areas
Spot calmer water between areas of breaking waves
Check for a channel cutting through sandbars
Observe waves breaking less often in one area
Look for disturbed water near jetties, piers, or rock structures