British actor Orlando Bloom showed off his green credentials as he joined a climate change rally in Los Angeles on Sunday (17Feb13).

The Pirates of the Caribbean star donned a Beyond Coal T-shirt as he participated in the event, organised to urge U.S. President Barack Obama to reject plans for a new oil pipeline stretching from Canada to refineries in America.

Bloom attended the march on behalf of the Global Green charity, which encourages sustainability with eco-friendly projects and initiatives.

His model wife Miranda Kerr took to her page to share a photo of her husband, tweeting, "My man at the climate rally with his cousin on behalf (of) Global Green... check it out."

Similar rallies were held in Washington, D.C. and other major U.S. cities.