They had their facemasks on, regulators in. Ade had brought along a high-powered diving light to help illuminate their way, while Eva had a diving knife clipped to her belt. Neither wore a full wet suit. There just wasn’t time. Ade was used to the temperatures, but Eva wore a short suit covering her top half and arms. They would only be in the water for a short while with any luck. She checked the pouch clipped to the arms of her buoyancy control backpack. Inside was the key to the lock that would give them access to the sub. She made the “okay” sign by forming a circle with her thumb and forefinger. Ade returned it. He pointed down with his thumb, and Eva nodded. With that, the South African dived down into the water, his body slipping through the darkness. The diving light created a wide bloom of illumination, making it easy for Eva to dive in and catch up with Ade. She followed him as he gracefully kicked his flippered feet and propelled himself toward the long, dark shape hanging under the water.