Marker buoys are still a thing

Surface Marker Buoys - Diving Safety - Aqua-Marina PADI 5*, Tenerife

BCGS Tip 34 - Marker Buoy Camo

Special Buoys and Marks (4 flashes)

Plans for virtual buoys to replace some markers outside California

Can't Live Without: Part 2-Marker Buoy

Marker buoys still a thing, Better 'crawler action, Melons of the week – Target Walleye

DIY Fishing Marker Buoy

Marker buoys are still a thing, Your GPS is goodreally goodbut it can never be as spot-on as a good old-fashioned marker buoy. Tough to beat for spot-on-the-spot type deals

Buoy - Wikipedia

Homemade cheap marker buoys for fishing.

Shallow Bay Marker Buoy

channel marker buoy that washed up on the beach in my town after a