The Press-Democrat reports ( http://bit.ly/Zx8CvF) a man collapsed on a Sonoma County beach after getting out of the water Saturday.
A ranger at Salt Point State Park said the man went into distress in a popular hunting ground for the mollusks, where another diver died one week earlier.
Fishing season for abalone, which are prized delicacies by seafood lovers, opened April 1 and ran for several weeks without incident.
Then last weekend three divers died in separate incidents in the water, where powerful rip currents were reported.
Since the early 1990s, dozens of people have died while diving in the sometimes rough seas for abalone.