File:Cave diving guideline reel IMG 20190517 181237.jpg - Wikimedia Commons

Scuba Dive Reel with Thumb Stopper, 150-foot High Visibility Retractable Line Diving Reel Finger Spool with Handle Stop Switch for Cave and Wreck Exploration, Kayaking Anchor, Spear Fishing, SMB Blue+Orange Line

Pluzluce 150ft Scuba Diving Reel Line Replacement,2mm High Strength Spool Reel Line Cord for Scuba Dive Reel - Deep Sea, Wreck and Cave Diving, Safety Dive Marker, Dive Float Flag Orange

Diving Reel and Spool - Gibielle - Techinacal Equipment

15m/30m Scuba Diving Aluminum Alloy Spool Finger Reel With Stainless Steel Double Ended Hook Smb Equipment Cave Dive

Staying Connected – A Beginner's Guide to Lines in Cave Diving

Classic Primary Reel

Dirzone Cave Reel

Sidewinder Explorer Reel

Advanced Cave Diving in the Bermuda Deep

DeepintheDark - Canada