Following the vernal equinox of March 20 comes the second full moon of the month—a “blue moon”—on Saturday, March 31. In between is a week of afternoon minus tides for beachcombing. The brilliant star now appearing in the northwest sky is Venus.

Gray whales are moving north and Northern elephant seals are returning to the sea as March continues.  The temporary closure on Drakes Beach to protect elephant seals lifted on March 15. Male elephant…