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#bathymetry #depth measurement #nautical survey #plumb line #hydrography #water depth

🌊⬇️🐠⚓

#oceanography #underwater #marine life #seabed #below water surface #bathyal zone #hydrography

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#oceanography #marine science #sensor buoy #ocean monitoring #environmental sensing #hydrography

🌊↕️📏

#oceanography #limnology #water depth measurement #hydrography #bathymetry #water level #sea level

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#oceanography #limnology #water temperature #stratification #thermocline #water profile #hydrography