RIO VISTA, Calif. – Hope dimmed Wednesday for two lost, wounded whales as scientists spotted the humpbacks wildly slapping their tails on the water in possible distress as they lingered far from their ocean home. Deep cuts on the mother whale and calf, likely caused by a run-in with a boat, were worsening after more than a week in freshwater that the pair are not physically well-equipped to inhabit, biologists said. “I wouldn’t say there’s a lot of optimism right now,” said Brian Gorman, a spokesman for the National Oceanic and Atmospheric Administration. “They may surprise us again. They may just take off and head down river. But as long as they continue doing what they’re doing, we’re very worried about them.” For a third day, the whales frustrated efforts to herd them past a Sacramento River bridge. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!