IODE Ocean Portal
http://ioc.unesco.org/.../browse.php
National Virtual Ocean Data Systems
http://ferret.pmel.noaa.gov/.../dataset
NOSA
http://nosa.noaa.gov
NOWCOAST
http://nowcoast.noaa.gov
Observation Registry Map
http://oceanobs.org/wc/map
OPeNDAP Registry
http://www.opendap.org/.../datasets.cgi
Real-time Coastal Observing Stations by USF
http://ompl.marine.usf.edu/.../index.php
Thematic Realtime Environmental Distributed Data Services
http://www.unidata.ucar.edu/.../THREDDS/