Different conferences one can publish ocean related themes:
Oceanology International 2008 Conference Technology, Sustainability and the Oceans, Tuesday 11 – Thursday 13 March 2008, ExCel, London, UK http://www.imarest.org/events/oceanology/
5th Annual EnergyOcean Conference, Galvaston, Texas, June 24–26, 2008, www.energyocean.com
Oceans 2008 MTS/IEEE Conference, September 15–18, Quebec City, Quebec, Canada, www.oceans08mtsieeequebec.org, June 24–26
US-EU Baltic International Symposium, Tallinn, Estonia, May 27-29, 2008, http://www.us-eu-baltic2008.org/
What: PASSIVE'08, October 14-17, 2008, Hyeres, French Riviera, France, www.passive08-hyeres.org
Underwater Acoustics 2008, London, U.K., www.seiche.com
Underwater Vehicle Showcase, Southampton, U.K.,
IEEE/OES AUV: A Workshop on Multiple Autonomous Underwater Vehicle Operations (organized by IEEE Oceanic Engineering Society), Information at http://www.oceanicengineering.org/ (Conferences and Workshops).
IEEE/OES Oceans (IEEE Oceanic Engineering Society) Information at http://www.oceanicengineering.org/.
OMAE:International Conference on Offshore Mechanics & Arctic Engineering, Sponsored by The American Society of Mechanical Engineers. Information at http://www.asmeconferences.org
UUVS: Unmanned Underwater Vehicle Showcase, Southampton Oceanography Centre, Southampton, U.K. Information at http://www.uuvs.net/.
Seatech Week: International Week for Marine Science & Industry (organized by IEEE Oceanic Engineering Society). Information and registration at http://www.oceanicengineering.org
All-Energy Opportunities Exhibition & Conference (to be held in conjunction with the European regional meeting of the World Renewable Energy Congress, Aberdeen Exhibition & Conference Centre, Aberdeen, Scotland. Information from co-organizers Media Generation Events Ltd. and Aberdeen Exhibition & Conference Centre at http://www.all-energy.co.uk/contact.php.
Offshore Europe, Aberdeen Exhibition & Conference Centre, Aberdeen, Scotland. Information at http://www.offshore-europe.co.uk/.
International Conference on Computing, Communication and Control Technologies: CCCT, http://www.iiisconfer.org/
Current Measurement Technology Conference - http://www.ieeeoes.org click on "Conferences and Workshops" and select "Current Measurement"
EnergyOcean - annual renewable ocean energy conference and exposition.The conference focuses on the activities offshore to develop sustainable energy sources for the future of our civilization. The goal is to put technologists, policy-makers, and scientists together with the worldwide marketplace to focus on the potential, the challenges, and new developments in the field of sustainable and renewable ocean energy. http://www.energyocean.com
Oceanology International, the Americas, http://www.oiamericas.com/.
Society for Historical Archaeology Conference on Historical & Underwater Archaeology, visit http://www.sha.org/index.html.
Partnership for Observation of the Global Oceans (by invitation), Hobart, Tasmania, Australia. Information at http://www.oceanpartners.org/bmain.html.
International Conference on Marine Bio-invasions. Information for abstract submission and registration at http://www.sgmeet.com/mb/.
Gordon Research Conference on Polar Marine Science. Information and registration at http://www.grc.org/.
Advances in Deepwater TLPs, The Houstonian, Houston, Texas. Information and registration at http://www.ibcenergy.com/.
Offshore Europe, http://www.offshore-europe.co.uk/.
UUVS: Unmanned Underwater Vehicle Showcase, Southampton Oceanography Centre, Southampton, Hampshire, U.K. http://www.uuvs.net/
Underwater Science Symposium: Monitoring and Measuring the Underwater Environment, Information from Jean Pritchard, Society for Underwater Technology, +44 (0)1224 823637 or firstname.lastname@example.org.
The Institute of Navigation, National Technical Meeting. Information and registration at http://www.ion.org/.
DSEi: Defence Systems & Equipment International http://www.dsei.co.uk/.
Underwater Intervention, Ernest N. Morial Convention Center, New Orleans, Louisiana. Information and registration at http://www.underwaterintervention.com/.
U.S. Hydro (sponsored by The Hydrographic Society of America), Information and registration at http://www.thsoa.org/.
Tanker Operator Conference. Information and registration at http://www.tankeroperator.com/info.htm.
Diving for Science Symposium of the American Academy of Underwater Sciences, Information and registration at http://www.aaus.org/.
The Gordon Research Conference on Permeable Sediments. Information at http://www.skio.peachnet.edu/grc/.
Habwatch Workshop: Real-Time Coastal Observing Systems for Ecosystem Dynamics and Harmful Algal Blooms, Observatoire Océanologique and Citadelle of Villefranche-sur-Mer, France. Information and registration at http://www.habwatch.org/.
A Sea of Change: JGOFS Accomplishments and the Future of Ocean Biogeochemistry, National Academy of Sciences, Washington, D.C. Information requests and comments to email@example.com or firstname.lastname@example.org. Program will be announced at http://usjgofs.whoi.edu/ or http://ads.smr.uib.no/jgofs/jgofs.htm.
International Oil Spill Conference, Vancouver Convention & Exhibition Centre, Vancouver, British Columbia, Canada. Information and registration at http://www.iosc.org/index.htm.
Hydro: Australasian Hydrographic Symposium, Christchurch, New Zealand. Information at http://www.hydrographicsociety.org.nz/conference.htm
Sydney, Australia. Information at http://www.dsto.defence.gov.au/corporate/conferences/swsurvey/.
National Conference on Coastal and Estuarine
Information at http://www.estuaries.org/.