Next time you are beaten down by San Francisco - the traffic, the tall buildings, the lost souls sleeping in doorways, the crowds, the never-ending roar of the city - think of this: Fearsome animalsThere are deadly animals out there, sharks and killer whales, like the lions of the forest. The drone, loaded with lights and cameras, sent back pictures, live and in color. The scientists sat in front of screens like movie moguls watching a science fiction film, a movie about space flight, only under water. Underwater plants, sea anemones, swayed like a meadow in a gentle wind. [...] that is a display, a kind of fishy zoo, sea creatures rounded up for your viewing pleasure. "How many folks come out here, on a fishing trip, or riding on a cruise ship, maybe and have no idea what is under here," said Jim Delgado, who has spent a lifetime studying the ocean. After the last dive of the day, the crew pulled up the robot, manhandled it onto the deck and washed off the salt water.