Seaweed harvest, whether it is the harvest of alluvial, attached, or floating seaweed does not fall with the scope of the public trust right of fishing.
King, 2009. p. 13 (final page)

1. FAQ on the legal status of rockweed ownership.

2. White paper by Hannah King, J.D. (University of Maine Law School): 
         Rockweed ownership and the public trust