Agate Beach County Park provides a great dive site for new divers or those looking for a relaxing shallow dive in Outer Bay. There is a rocky shoreline on both sides of the sandy beach marked by boulders and kelp. The bay is only about 35' deep with a large eel grass bed and houses several rock formation that are visible above the water. One is very near the shore and has minimal life on it.

A possible dive plan (for strong swimmers) would be to surface swim to the larger formation in the middle of the bay (called Shark Fin Rock), descend and explore and and then to a smaller one to the north called Outer Rock. The outside of Outer Rock has a broad face usually covered with urchins. Then swim to the northern shore and explore the kelp and boulders on your way back in. On a flood you'll have the current working with you on the return. On an ebb there will be little if any current at all.