They could improve that by losing the turbines, and connecting a bunch of units to a common plenum driving a single turbine on shore. They could use two plenums

They could improve that by losing the turbines, and connecting a bunch of units to a common plenum driving a single turbine on shore. They could use two plenums, one with overpressure and another with vacuum, and connect the turbine between those. It would still expose a bunker to surface waves, but anyway it has no exterior moving parts. I am surprised they did not shape it to avoid absorbing direct strikes on the outside -- something more dolphin-shaped. It says something when a random passersby can suggest major design improvements on a few minutes' acquaintance, but it is a common feature of almost all proposed renewable energy generation and storage technologies. The incentive structure for proposals and grants seems to enforce extreme overcomplication in order to seem "novel". There seems to be no space for simplicity.