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Independent oil and gas company Woodside has signed an agreement with Perth-based Blue Ocean Monitoring (BOM) to invest in technology innovation firm Blue Ocean Seismic Services (BOSS).

British scientists create life-like robotic fish that scour the depths of the ocean for pollutants

As a largely unexplored renewable source, marine and hydrokinetic energy - or ocean power - is gaining traction as the next best thing in the power industry.

Initially, the battery is filled with freshwater and a small electric current is applied to charge it up. The freshwater is then drained and replaced with seawater. Because seawater is salty, containing 60 to 100 times more ions than freshwater, it increases the electrical potential, or voltage, between the two electrodes. That makes it possible to reap far more electricity than the amount used to charge the battery.