These sites provide advice for those interested in a career in the marine or aquatic sciences:
Sea Grant: Marine Careers
Careers in Aquatic Science
Careers Relating to Marine Mammals
Marine Biology Career Questionaire
Careers in Oceanography and Marine Related Fields
Advice and hints about becoming an oceanographer
Training and Careers for Oceanographers
College Programs in Marine Biology
The following webpages have postings for jobs, post docs, traineeships, internships, etc. specific to the marine and aquatic sciences:
Ocean Science Careers
Summer Courses & Internships in Marine Biology
Monterey Bay Aquarium Research Institute summer internships
Estuarine Research Federation
American Society of Limnology & Oceanography
Check out the SeaCamp site to find out information on this co-ed camp for kids ages 12 to 17. They provide a camp that exposes kids to marine science, scuba, snorkeling, labs, sailing, windsurfing and kayaking. SeaCamp has been in business since 1966 and is located in Big Pine Key, Florida.