The Monterey Bay E-quarium Kids' Guide lets you explore the habitats
in the ocean.
Kid's and Teacher Resources from the Year of the Ocean
Project Oceanography
from the University of South Florida.
Ocean Planet: An interactive exhibition from the Smithsonian
Educational materials to go with Ocean Planet
The New England Aquarium
educational site - and
Teacher Resource Center offers free consultation help for teachers.
The Kid's Space has some hands-on projects for kids.
Educational Resources from the Topex Jet Propulsion Lab (NASA)
Education Resources for
Oceanography and Earth Sciences
The following are great resources for all sorts of topics, but not
focused on oceanography:
National Geographic's
educational site
Discovery Channel School
Scholastic's Teacher Homepage