I'm interested in what causes methotrexate toxicity Here's a fisherman's tale to top them all: A science instructor was snorkeling off the coast of Southern California when she spotted the carcass of an enormous, 18-foot-long oarfish near the Toyon Bay. "I was thinking, 'What could this be?' It's so big!," Jasmine Santana, 26, of the Catalina Island Marine Institute, told the Daily News about her discovery. "We usually don't have anything that long in our bay. … We snorkel here almost daily, so it's crazy to find this," she said. The oarfish, the longest bony fish species, is rarely seen dead or alive and is thought to be the sea serpent of sailing legends.