The Earthrace biodiesel boat made headlines last year during an around-the-world trip using biodiesel - it wasn't an easy journey. The ship's future could also be fraught with difficulty. The Earthrace website says the boat is for sale with an asking price of $1.5 million but we hear reports that the boat may soon find another life as part of the Sea Shepherd Conservation Society fleet hunting down whale hunting ships in Antarctica. In fact, it's the Sea Shepherd group that might purchase the boat, and the ship's owner likes the idea. "I would like to see it go to someone whose heart is in the right place. Sea Shepherd would be the perfect ending to this," he told Stuff.co.nz. The fast Earthrace boat could be used as a "strike vessel" to hassle whaling ships while the group's slower Steve Irwin vessel brings up the rear.