How do elephants use their trunks to investigate possible danger?

When an elephant suspects danger, it utilizes its trunk as an "olfactory periscope" to gather information from its surroundings. By raising and swiveling the trunk, the elephant can effectively sniff the air to detect potential threats.12

This behavior is part of the trunk's role as a vital sensory tool for the elephant. Beyond its use in detecting danger, the trunk is an incredibly versatile organ that allows elephants to perform complex tasks, including breathing, drinking, eating, and communicating through various vocalizations and physical gestures.123