This morning, one of the big Elysia clarki was coiled suspiciously on one of the Udotea . Sure enough, she was laying another large egg mass. There must be thousands of little embryos in there. They have been laying about one mass per week, for quite some time, and the total count is at least 21 egg masses since September. That is a lot of eggs for two slugs.
Keeping fingers crossed about getting the babies to eat, now that we have some new Bryopsis plumosa.