As Caitlyn mentioned, there is no separation between land and sea; it is one. The land provides for the sea. The nutrient base is coming from the land through the myriad of streams that exist there and feed the marine environment. That, in turn, returns with the fish and the salmon that travel up these rivers, so you have a continual exchange of nutrients taking place between the land and the sea. One cannot exist without the other, and both will be impacted equally by any catastrophic event.
On October 31st, 2017. See this statement in context.