Birdwatch Note Rating
2023-06-25 03:16:04 UTC - HELPFUL
Rated by Participant: 26C9A36A244E5C651367822942E8295EE7E7A4D34C46CB7C7C9F9CD1EC8F79CF
Participant Details
Original Note:
GPS and other global navigation satellite systems (GNSS) do not work underwater as the signal does pass through water well. https://www.gps.gov/systems/gnss/ https://www.zdnet.com/article/gps-and-water-dont-mix-so-scientists-have-found-a-new-way-to-navigate-under-the-sea/ DARPA is working on an underwater system: https://www.darpa.mil/program/positioning-system-for-deep-ocean-navigation Trackers record continously, but only determine / transmit their position while on the surface. https://sharkresearch.earth.miami.edu/research/projects/gps-for-sharks/ https://www.ocearch.org/tracker/
All Note Details