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Aplysia sp
It's Cindy's question about the salt water that lead to the solution!! Great team work on everybody's part :))
http://www.southernshores.auz.info/beach...
These eggs look similar to yours and they are the eggs of a Sea hare which is a herbivorous sea slug.
and also the water in inter tidal zones is not always salty, but varies from fresh water to salty..
" Water is available regularly with the tides but varies from fresh with rain to highly saline and dry salt with drying between tidal inundations." - wikipedia
http://en.wikipedia.org/wiki/Intertidal_...
CIndy,
at least the eggs of Cane toad are tolerant to low concentration of salt water.
Reproductive habitat: The cane toad has been shown to exhibit a preference for laying eggs in shallow pools with gentle slopes and little bankside vegetation, both in parts of its native range and in Australia, and will also breed in slow-flowing rivers and streams. Cane toads breed in both permanent and temporary water bodies, although may prefer the latter. The cane toad is exceptional among anurans in possessing eggs and larvae that are tolerant to low concentrations of salt water.
http://online-field-guide.com/Chaunusmar...
BluberryLiLi, you said this was intertidal so I'm guessing this spotting was exposed to salt water regularly. If so, Emma, do Toads lay eggs in salt water?
If this spotting was at nearby fresh water, then they may be from a Toad.
I think these are American toad eggs.
http://www.flickr.com/photos/vickisnatur...
I agree, they look like eggs. Sorry I don't know which. There are a couple missions you can add this to: Southern California Wildlife http://www.projectnoah.org/missions/7964... and California Coastal Wildlife Watch http://www.projectnoah.org/missions/4975...
Intertidal mission bay San Diego. I don't think it's worms, maybe eggs of some sort. I don't even know how to begin researching it.