ISMARE
Irish Marine Data Centre
National Ocean Service
Information on environmental monitoring, coastal monitoring and assessment, water quality, biodiversity, aeronautical chargting and cartography, nautical charting and cartography, national marine sanctuaries (United States).
NOAA Tropical Atmosphere Ocean Project
Real-time data from moored ocean buoys for improved detection, understanding, and prediction of El Niño and La Niña.
PO.DAAC
The NASA JPL Physical Oceanography Data Center. Active data archive from satellite remote sensing; MODIS, LANDSAT, Jason, TOPEX/POSEIDON.
SADCO
The South African Data Centre for Oceanography stores, retrieves and manipulates multi-disciplinary marine information from the areas around southern Africa.
Tides Online
Provides users with immediate graphical and tabular water level and meteorological data from U.S. National Ocean Service water level stations located along the projected path of severe storms such as hurricanes.