Birdwatch Note Rating
2023-06-23 14:03:54 UTC - SOMEWHAT_HELPFUL
Rated by Participant: 3779810E2AE2830519091CEFB4380DC947A3449DD1FB5816943414C50CF3A61F
Participant Details
Original Note:
Radio frequencies used by GPS cannot penetrate water beyond a few centimetres. https://link.springer.com/article/10.1007/s00190-018-1147-x Wildlife trackers with transmitting capability either use acoustic signals to a nearby vessel, or RF which requires the animal to surface or the tag to detach and float (by design). https://www.himb.hawaii.edu/ReefPredator/Tools.htm
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