Not Bryopsis.
Most Likely Caulerpa racemosa or Caulerpa brachypus. The photo you have posted, resemble the starting branches to either one of the spices I have noted here. If allowed to grow you will end up with something that resembles one of the two photos below.
Caulerpa brachypus
Caulerpa racemosa
Caulerpa is a pest algae that has been outlawed in many coastal states including California and Maine. Millions of dollars have been spent trying to eradicate it from their coastal waters.