In Reply to: sea urchin hunting posted by bentman on November 26, 2009 at 13:42:29:

California Department of Fish and Game Website has the information.

http://www.dfg.ca.gov/marine/pdfs/oceanfish2009.pdf
29.05. General.
(a) Except as provided in this article there are no closed seasons, closed hours or minimum
size limits for any invertebrate. The bag limit on all invertebrates for which the take is authorized
and for which there is not a bag limit otherwise established in this article is 35. In San Francisco
and San Pablo bays and saltwater tributaries east of the Golden Gate Bridge invertebrates may
not be taken at night except from the shore.
(b) Take of all invertebrates is prohibited within state marine reserves. Take of certain invertebrates
may be prohibited within state marine parks and state marine conservation areas as per subsection
632(b). In addition, tidal invertebrates may not be taken in any tidepool or other areas
between the high tide mark (defined as Mean Higher High Tide) and 1,000 feet seaward and
lateral to the low tide mark (defined as Mean Lower Low Water) except as follows:
(1) Except where prohibited within state marine reserves, state marine parks, state marine
conservation areas, or other special closures only the following may be taken: red abalone, limpets,
moon snails, turban snails, chiones, clams, cockles, mussels, rock scallops, native oysters,
octopuses, squid, crabs, lobsters, shrimp, sand dollars, sea urchins and worms except that no
worms may be taken in any mussel bed, unless taken incidental to the harvesting of mussels.
(c) Measuring Devices. Every person while taking invertebrates which have a size limit shall
carry a device which is capable of accurately measuring the minimum legal size of the species
taken.
(d) In all ocean waters skin and Self Contained Underwater Breathing Apparatus (SCUBA) divers
may take invertebrates as provided in this article except that in all ocean waters north of Yankee
Point (Monterey Co.), SCUBA may be used only to take sea urchins, rock scallops and crabs of
the genus Cancer. For the purpose of this section, breathing tubes (snorkels) are not SCUBA.