The phrase identifies a set of conditions or circumstances where increased vigilance for elasmobranch predators in aquatic environments is prudent. It suggests that seemingly favorable or ideal environmental factors, such as unobstructed visibility above and within the water, do not negate the possibility of encountering these animals. For instance, a day at the beach with excellent weather might lead to a false sense of security, masking potential risks associated with marine wildlife.
Heightened awareness during these seemingly safe conditions stems from the fact that clear visibility can also benefit predators, allowing them to spot potential prey more easily. Historically, reports of encounters have sometimes occurred during such times, indicating that environmental factors alone are not reliable indicators of safety. Understanding this relationship helps to foster a more cautious and informed approach to recreational water activities.
