Kelp is what urchins eat.
“Kelp is what urchins eat.”
Uni is one of life’s great pleasures when so fresh it is still alive when opened. The Japanese have that down to a art from.
There is a breed of sheep in Ireland that due to being cut off from their native pasture lands hundreds of years ago they live on and eat almost exclusively seaweeds along the Irish coast where they are trapped at. They evolved the thyroid functions to process the high levels of iodine in the native sea grasses and kelps. The meat from those animals is safe for ordinary humans to eat so it makes sense to take animals that can eat kelp and feed them that as feed and fodder. Eat the meat, wear the wool and drink the milk while having delicious cheese and butter as well. Kelp out grows any land plant by biomass volume at least five to one. It needs no fertiliser or water source or rain. All you need is open ocean that’s not to full of sediments which would choke off the sunlight at depth.
The best plant for biomass on dry land is agave it’s a C4 plant and doubles or triples what sugarcane or hybrid switch grass can put out per hectare the next closest two plants just in front of bamboo and kudzu. Kelp and macro seaweeds 5X agave they are not really comparable in yields per square meter of sunlight. Kelps approach 5% conversion of sunlight too biomass no land plant exceeds 1% fresh and brackish water plankton and algae get into the 2% ranges doubling vascular land plants. Duckweed is the top spot for vascular plant biomass per square meter and it floats in freshwater so technically not a land plant. The point is the earth is 75% ocean this planet should be called Oceania not earth viewed from space we are a water planet by a large margin. Farming the oceans is not only the next frontier it is absolutely critical when faced with ten billion humans by the end of the century.