The mouth of it was narrow, barely wide enough for a diver to fit through, and it seemed to go on forever. He swung his torch across the entrance. The beam reached only a few meters before fading into a thick, green fog of silt.
He shook his head sharply, signaling to retreat. But when he turned, Edwin was already moving. The younger man pushed off with a burst of bubbles, fins slicing the water as he slipped toward the cave. His light disappeared inside before Elias could even shout through his regulator.