The waters around Turtle Shell Island churned with an unnatural foam as Captain "Blackbrine" Maddox surveyed the approaching Marine vessels through his spyglass. His flagship, the Poisoned Chalice, rode the waves with predatory grace—a converted battle cruiser whose additional cannon ports and reinforced hull spoke of serious military modifications. Around him, his crew prepared for combat with the efficient movements of professional soldiers rather than typical pirates.
"Three Marine patrol boats, Captain," called out his first mate, a scarred woman whose tactical expertise had earned her position through years of successful operations. "Standard G-82 configuration, probably forty Marines total. Hardly seems worth our time."
Blackbrine lowered his spyglass, his weathered features set in a thoughtful frown. Something about this approach bothered him—three small vessels attacking a fortified position was either desperate courage or elaborate suicide. Commander Yamato had a reputation for tactical brilliance, which meant this apparent suicide run was probably something else entirely.
"Signal the shore batteries to hold fire until my command," he ordered. "I want to see what game the good Lieutenant Commander is playing."
Two miles out, Rima stood at the bow of the Justice's Wake, her uniform replaced by practical combat gear and her expression focused on the tactical nightmare ahead. Turtle Shell Island looked exactly as Kane had described—a natural fortress with concealed gun emplacements, patrol boats patrolling the approaches, and enough firepower to sink a battle cruiser. Attacking it head-on would be suicide.
Fortunately, she had no intention of attacking it head-on.
"Sarah, are you in position?" she asked into her earpiece.
"Affirmative. The supply convoy is right on schedule—three cargo ships escorted by two light cruisers. They should reach the island in approximately twenty minutes."
The plan was ambitious to the point of insanity. Rather than assault the island's defenses directly, they would attack the incoming supply convoy and use the confusion to infiltrate the base while the defenders focused on protecting their fuel shipments.
"Kenji, signal the other boats. Execute Plan Delta in thirty seconds."
Her small fleet suddenly dispersed, the patrol boats spreading out in what appeared to be a standard encirclement maneuver. To observers on the island, it would look like a textbook Marine assault—overwhelming the target with coordinated attacks from multiple directions.
What they couldn't see was the fourth vessel approaching from the island's blind side.
Agent Mitchell's commandeered fishing boat looked like civilian traffic, complete with nets and tackle that disguised advanced communication equipment and enough explosives to cripple a warship. Her mission was to reach the island's fuel depot while the defenders were distracted by the apparent Marine assault.
"Contact bearing two-seven-zero," Maria's voice crackled over the radio. "Large vessels approaching from the southeast—looks like our supply convoy."
Perfect timing. Rima raised her hand, feeling the familiar surge of power as her Devil Fruit abilities responded to her will. Around the Justice's Wake, the ocean began to behave in ways that defied natural law—currents flowing in impossible directions, waves building where none should exist, pressure changes that would confuse every instrument on the enemy ships.
"All vessels, engage targets of opportunity. Priority is disruption and confusion, not destruction. We need those supply ships intact."
The first phase of the attack unfolded with choreographed precision. Marine patrol boats darted between the much larger supply vessels like wolves harassing a herd, using speed and maneuverability to avoid devastating return fire while creating maximum chaos. The escort cruisers found themselves trying to protect cargo ships that scattered in panic while coordinating with shore defenses that couldn't target the Marines without risking friendly fire.
But as the battle developed, Rima realized they had underestimated their opponents.
Captain Blackbrine's response was immediate and devastatingly effective. Instead of falling for the apparent confusion, he used the supply convoy as bait, positioning his own ships to create a crossfire that would trap the Marine patrol boats between his fleet and the shore batteries.
"Commander, we've got problems!" Kenji's voice carried over the sound of cannon fire. "That flagship is moving to cut off our retreat route, and there are more ships approaching from the north."
Through her binoculars, Rima could see the trap closing around them. Blackbrine had turned their own tactical plan against them, using their need to protect the supply convoy to limit their mobility. Worse, the additional ships approaching from the north looked like military vessels rather than converted pirates—someone had been expecting exactly this kind of attack.
"This is too well coordinated," she muttered. "They knew we were coming."
Sarah's voice crackled through the earpiece. "Rima, I'm seeing activity at the fuel depot that doesn't match normal supply operations. Heavy equipment, chemical storage tanks, and what looks like laboratory facilities. This isn't just a refueling station—it's a chemical weapons production facility."
The revelation changed everything. If this island was manufacturing the poisonous substances that had killed so many innocent civilians, then destroying it became a moral imperative regardless of the tactical cost.
"Sarah, can you reach the production facilities?"
"Negative. Too much security, and they've activated lockdown procedures. I'm going to have to create a distraction to get inside."
Before Rima could ask what kind of distraction, explosions erupted across the island's harbor facilities. Sarah's fishing boat had apparently been loaded with enough explosives to level a city block, and the secondary explosions suggested she'd managed to hit something genuinely volatile.
The effect on the naval battle was immediate. Shore batteries ceased firing to avoid igniting whatever Sarah had damaged, escort vessels turned toward the harbor to assess the emergency, and even Blackbrine's flagship hesitated as toxic smoke began pouring from the island's industrial facilities.
"Now!" Rima shouted. "All vessels, maximum attack speed! Focus on the flagship!"
The Justice's Wake leaped forward like a living thing, her hull cutting through waves that parted at Rima's unspoken command. Behind her, Maria's gunners found their range with deadly accuracy, their cannon fire striking the Poisoned Chalice's reinforced hull with impacts that sent shockwaves through the water.
But Blackbrine's response revealed why he was considered one of the most dangerous pirates in West Blue.
"Bubble Barrage!" he roared, raising his hands toward the Marine vessels.
The sea around the Poisoned Chalice suddenly erupted in foam as Blackbrine's Devil Fruit powers manifested. The Awa Awa no Mi—the Bubble-Bubble Fruit—allowed him to create massive quantities of foam that could trap ships, deflect cannon balls, and even support the weight of an entire crew walking on water.
Within seconds, the clear waters around Turtle Shell Island had become a maze of foam barriers and bubble constructs that turned the naval battle into something resembling combat in three dimensions. Blackbrine's crew moved through the foam like it was solid ground, repositioning cannons and attacking from angles that should have been impossible.
"Commander, I can't target them through all this foam!" Maria called out in frustration.
"Then we go through it instead of around it." Rima moved to the bow, placing both hands on the ship's rail. "Everyone hold on—this is going to get rough."
The Nami Nami no Mi responded to her will with devastating effect. Pressure waves rippled outward from the Justice's Wake, not just disturbing the water but creating compression effects that turned foam into flying debris and bubbles into bursting barriers. Where Blackbrine created obstacles, Rima's powers created pathways, her mastery of wave dynamics allowing her to navigate through his three-dimensional maze as if it were open water.
"Impossible!" Blackbrine's voice carried across the water, tinged with genuine surprise. "No one can navigate through concentrated foam barriers!"
"You've never fought someone who can control the ocean itself!" Rima replied, her powers reaching out to encompass not just the water around her ship, but the very foundations of Blackbrine's foam constructs.
The battle between Devil Fruit users became a contest of fundamental forces. Blackbrine's bubbles created barriers and platforms that defied the normal behavior of water, while Rima's waves created pressures and currents that made normal navigation impossible. Each combatant was trying to impose their will on the same medium, turning the ocean into a battlefield where the laws of physics bent to accommodate supernatural abilities.
But as their powers clashed, Rima began to understand the true scope of Blackbrine's abilities. His foam wasn't just defensive—he was using it to create floating platforms for artillery pieces, mobile barriers that could redirect cannon fire, and even bubble-based projectiles that struck with the force of cannon balls but couldn't be intercepted by conventional means.
"Maria, forget conventional targeting. I'm going to create a clear path directly to his ship. When I do, give him everything we've got."
"Aye, Commander!"
Rima focused her powers into a single, devastating application of the Nami Nami no Mi. Instead of creating waves or pressure differentials, she reached deep into the water's molecular structure and began reversing the surface tension that allowed Blackbrine's foam to maintain cohesion.
The effect was spectacular. Foam constructs began collapsing as their foundation lost stability, bubble barriers burst as the water supporting them changed its fundamental properties, and Blackbrine's carefully constructed three-dimensional battlefield dissolved into normal ocean.
For one perfect moment, the Poisoned Chalice was completely exposed, her reinforced hull gleaming in the afternoon sunlight with no barriers or obstacles between her and the Marine guns.
Maria's cannon crew didn't waste the opportunity. Six direct hits struck Blackbrine's flagship in rapid succession, punching through armor plating and causing explosions that sent smoke and debris flying across the water.
But even as the Poisoned Chalice staggered under the assault, Blackbrine's voice echoed across the battlefield with undiminished confidence.
"Excellent shooting, Commander! But you should know—this ship has survived worse than anything your patrol boats can deliver. And now you've exhausted your element of surprise."
As if to emphasize his point, the damaged sections of his ship began sealing themselves with rapidly hardening foam. Blackbrine wasn't just using his powers offensively—he was using them for damage control, creating patches and reinforcements that could withstand sustained bombardment.
"He's right," Kenji observed grimly. "We can hurt him, but we can't sink him with conventional weapons."
"Then we don't use conventional weapons." Rima's voice carried the cold determination that had earned her the loyalty of every Marine under her command. "All vessels, disengage and retreat to minimum safe distance. I'm going to try something that's either brilliant or completely insane."
"Commander, what are you planning?"
Instead of answering, Rima walked to the center of the Justice's Wake's deck and knelt, placing both hands flat against the ship's hull. Her consciousness extended downward, through the wood and metal of her vessel, into the water below, and then deeper still until she could feel the ocean floor itself.
Turtle Shell Island sat on an underwater plateau surrounded by deep trenches that dropped nearly a thousand feet below sea level. Those trenches contained massive volumes of water under enormous pressure, held in place by geological formations that had remained stable for millennia.
But geological stability was just another form of equilibrium, and equilibrium was something Rima could manipulate.
"Everyone brace for impact," she called out, her voice carrying an odd harmonic resonance as her powers reached depths they had never touched before.
What happened next would be talked about in Marine academies for decades to come. Instead of creating waves on the ocean's surface, Rima reached down to the seafloor and created them there, using tectonic pressure to generate a tsunami that originated not from wind or earthquake, but from the directed application of Devil Fruit powers to geological forces.
The first sign was a sudden drop in sea level around Turtle Shell Island as water was pulled into the growing wave front. Ships that had been floating normally suddenly found themselves sitting in water too shallow for navigation, while others were caught in currents that defied all prediction.
Then the tsunami struck.
It wasn't the chaotic wall of water typical of earthquake-generated waves, but a focused, directed force that seemed to know exactly which targets to hit and which to avoid. The Poisoned Chalice took the full brunt of the impact—millions of tons of water moving with the speed and precision of a guided missile.
Even Blackbrine's foam defenses couldn't absorb that much kinetic energy. His ship was lifted completely out of the water, carried nearly a quarter mile inland, and deposited on the beach with enough force to crack her keel and flood her lower decks.
But as the waters receded, Rima realized her victory had come at a cost she hadn't anticipated. The tsunami had been too powerful, too focused, and had affected geological formations that should have remained stable.
Turtle Shell Island was sinking.
"Commander!" Sarah's voice crackled through the earpiece. "Whatever you just did, it destabilized the entire plateau! The island's geological foundation is collapsing!"
Around them, the ocean was in chaos as underwater landslides created new currents and changed water depths by hundreds of feet. Ships that had survived the tsunami were now struggling with navigation hazards that hadn't existed minutes before.
"Sarah, what's your status? Can you reach the fuel depot?"
"The depot's gone—your tsunami took out the entire industrial complex. But I've recovered intelligence data from the laboratory facilities, and Rima... we have a bigger problem than I thought."
"Bigger how?"
"The missing Marines aren't just prisoners—they're test subjects for a chemical weapons program designed to create enhanced soldiers. And according to these documents, the testing phase is almost complete."
As Turtle Shell Island continued its slow descent into the depths of West Blue, Rima realized that their desperate gamble had succeeded in ways they hadn't expected and failed in ways they couldn't afford. They had eliminated a major enemy base and captured invaluable intelligence, but they had also accelerated the timeline for whatever the criminal organization was planning.
Somewhere out there, her missing Marines were running out of time, and the people holding them were preparing to use their research for purposes that could threaten the stability of the entire World Government.
The battle for Turtle Shell Island was over, but the war for West Blue was just beginning.