Surface Marker Buoy - Mandatory or Not

What is a Surface Marker Buoy? - Guide to DSMBs and SMBs

Types of Surface Marker Buoys & How to Use Them - AquaViews

Divers signal hi-res stock photography and images - Alamy

Yucatan from its finest

Diver Below Surface Marker Buoy--High Visibility Reflective Band on the double sided of the diver down flag, pointing out there is diver below . There

DSMB 4ft Surface Marker Buoy with 100ft Finger Spool Reel Diver Below Signal Flag Tube Scuba Diving Equipment Open Bottom Set (4ft)

Scuba Surface Marker Buoys (SMB) – a How-to Article

GirlsThatScuba in Komodo

Scuba Diving Surface Markers

Truk Lagoon 2019

Many divers wouldn't think of diving without carrying a delayed surface marker buoy (DSMB), and in some locations it's considered required safety

PADI® Delayed Surface Marker Buoy Course

Choosing the Right Surface Marker Buoy • Scuba Diver Life

4ft Scuba Diving Surface Marker Buoy (SMB) w/49ft Finger Spool Alloy Spool

Scuba Diving Group Trips

Delayed Surface Marker Buoy