minus-squareklugerama@lemmy.worldtoWhat is this thing?@lemmy.world•[Challenge-Solved] glass egg thinglinkfedilinkEnglisharrow-up40·2 days agoNot glass, but hardened resin. Used to track littoral currents and drift. Has metal so it can be found later with a metal detector. linkfedilink
Not glass, but hardened resin. Used to track littoral currents and drift. Has metal so it can be found later with a metal detector.