minus-squareTheOSINTguy@sh.itjust.workstoAsklemmy@lemmy.ml•If you were an intelligent sea creature who could not always rely on the sky to tell time (as is often the norm whilst out there), what would you use as a time reference if you wanted to measure time?linkfedilinkarrow-up3·10 hours agoShadows can still cast underwater, so you could use a rock as a sundial or just how light it is at a certain depth. linkfedilink
Shadows can still cast underwater, so you could use a rock as a sundial or just how light it is at a certain depth.