"Rare and mysterious" giant black jellyfish making an appearance in San Diego Harbor

SAN DIEGO - Gray whales wandering San Diego Bay may be a bit old hat, but you can't say the same for giant black jellies.

The large, dark-colored jellyfish have been appearing by the dozens or even hundreds in the harbor over the last several days, providing marine biologists and boaters alike with opportunities to glimpse a ''rare and mysterious'' sea creature, said Dr. Nigella Hillgarth, executive director of Scripps Institution of Oceanography's Birch Aquarium.

Some have also been washing ashore on the county's beaches.

''I think they're beautiful,'' said Hillgarth, whose staff has collecte...