While you are enjoying the long days, keep an eye out for jellies washed up on the beaches; they are susceptible to temperature changes in the upper layers of water. The park folks say “Tomales Bay State park rangers have been finding dinner plate sized – ice tea colored “Lions Mane ” jellies on their beaches, these may have tentacles that sting and cause an allergic reaction. Clear moon jellies with white crescents do not have stinging tentacles. Usually, by the time they are on the beaches, the tentacles have been eaten away.”
Photo thanks to Richard James.