Can we lay those huge tubes underwater to disperse it drip irrigation style? It's not like it's a lot of salt once diffused, especially with those glaciers melt

Can we lay those huge tubes underwater to disperse it drip irrigation style? It's not like it's a lot of salt once diffused, especially with those glaciers melting. We're already assuming far more electricity, so I'm not too concerned about the energy required to pump the brine many miles out, just worried about capital and repair costs.