SAN CLEMENTE—Whale watchers up and down the coast of Southern California April 20 were on the lookout for an entangled baby gray whale first spotted near the San Clemente Pier. Efforts to disentangle what appeared to be fishing lines wrapped around the calf’s head were unsuccessful April 19 as rescuers on an inflatable and two support boats attempted to pull off the lines with a telemetry buoy, said Justin Viezbicke of the National Oceanic and Atmospheric Administration. The lines entangled on the baby’s head “just kept breaking,” but “the main part of the entanglement is still there,” Viezbicke said. “So obviously, that’s a concern to us.” When the sun went down, rescuers lost sight of the baby and its mother, who was protective and alarmed by all the commotion, making rescue attempts more difficult. “We have not had any sightings of the whale today,” Viezbicke said April 20, adding that …