An expert says Australia needs to understand the ocean better, pointing to unscrewed surface vehicles as a potential solution.

<p>An expert says Australia needs to understand the ocean better, pointing to unscrewed surface vehicles as a potential solution.</p>

4BC Drive, live every weekday afternoon. With the latest news, 4BC will keep you updated on your drive home.

<p>4BC Drive, live every weekday afternoon. With the latest news, 4BC will keep you updated on your drive home.</p>