OIL WORM: After a robotic arm lifted a solitary worm from a hole in the floor of the Gulf of Mexico in what looked like ordinary surroundings, crude oil streamed from both the animal and the open hole. The “wildcat” tubeworm had hit a gusher and was dining on chemicals from decomposing oil, a find made at 3,250 feet (990 meters) at a 2007 voyage.