Submariner — Sea Life

The Trenchhammer Bulwark is a pressure-built siege beast that rams reefs until stone gives up pretending to be permanent. Its forward shell plates are layered with manganese scars and broken anchor teeth, forming a living battering ram that can turn a careless hull tap into a repair bill. Military crews prize the dense bulwark plates after a kill, not because the creature is easy to bring down, but because anything that survived this much pressure usually knows how to keep a ship alive too.