Maybe the seaweed of choice can be used to guide genetic engineering for producing large quantities of whatever ingredients are necessary to reduce methane-burping in cattle?
That is certainly worth investigating! And possibly combining with:
There's a lot of interesting things going on with hydroponics that look extremely encouraging for growing a lot of produce items with 90% less water, no pesticides, using solar for energy, etc, etc. Possible seaweed, or another plant with comparable benefits, may fall under that umbrella in the future?
I have a vision of giant tanks full of seawater located near or on cattle ranches, producing mutant seaweed for the cows. No telling what amazing things might happen in the future!
TomK