(Photo courtesy of NCTD) The North County Transit District will offer free rides between Oceanside and downtown San Diego on Thursday to promote the 30th anniversary of the Coaster train line.

There’s a variety of different frequencies to listen to underwater. And really, we view sound as another medium ... s surface is covered by [the] ocean. So, only a tiny fraction of that is ...

These women dive year-round off Jeju Island, collecting sea urchin, abalone and other seafood from the ocean floor ... percentage of their time underwater.” Ilardo, along with colleagues ...