In 2010, Thailand sank 25 retired battle tanks into the Gulf to rebuild fishing grounds; 9 years later, researchers found 53 fish species

• Almost 10 years after the tanks went under, researchers from Ramkhamhaeng University in Bangkok did some diving to see what had grown up around the man-made reef sites.
• It is built to cross tough terrain, take a beating and dominate a battlefield.
• But what if the battlefield disappears and there is no place for the tank to go?