The oceans have a tremendous amount of energy and are close to many if not most concentrated populations. Many researches show that ocean energy has the potentiality of providing for a substantial amount of new renewable energy around the world.

The oceans represent a vast and largely untapped source of energy in the form of fluid flow (currents, waves, and tides--also termed hydrokinetics) and thermal and salinity gradients. There are a number of approaches to extracting energy from the ocean, though most remain in the investigation or demonstration phase.

• Marine current power
• Ocean thermal energy conversion (OTEC)
• Salinity gradient power
• Tidal power
• Wave power

Sometimes Wind power (offshore) is also included in the list of renewable ocean energies.

Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License)

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