Hybrid Marker

A referencing exit marker or REM is a relatively new marker designed to be used as an arrow by the diver placing it and a cookie by others; as such, we are calling it a hybrid marker. A REM is rectangular in shape with slots included to allow divers to attach it to a line. It also has blank space available to include personal or team identification on one side and a small slate on the other to write on for reasons such as survey work, team separation (i.e. I exited the cave at 37 minutes), and