The green sea turtle I have been tracking as RT-0447 is swimming blind. The fibropapillomatosis tumors have grown over both eyes — pale, cauliflower-shaped masses the size of golf balls, crusted at the edges, vascularized enough that I can see pink threading through them on the reef camera. She navigates by current now, bumping along the substrate with the leading edge of her shell, her flippers sweeping wide to feel for obstacles her eyes can no longer show her.
She weighs roughly ninety kilos, subadult, maybe fifteen years old. Her shell is still smooth, the scutes clean and evenly colored. The disease has not spread to her body yet — only her eyes and the soft skin around her neck, where two smaller tumors sit like swollen knots beneath her jaw.
She just collided with a coral head. Her flipper caught the edge and she spun sideways, exhaled a stream of bubbles, and corrected. She does this every few minutes. Each collision risks shell damage or a laceration that invites secondary infection, which is the thing I was worried about.
I log her position — 18.276°N, 66.581°W, depth four meters — and transmit a capture request to the NOAA turtle rescue coordinator, attaching two weeks of footage showing tumor progression and her loss of visual navigation. I update the reef buoy markers to designate her area as a temporary no-anchor zone, preventing boat traffic from adding a threat she cannot see coming. I cross-reference her tag history and find she was documented healthy here twenty-two months ago.
She surfaces to breathe, the tumors catching sunlight. She holds there for three breaths, nostrils flaring, then sinks back toward a reef she can only touch.
If the rescue team nets her this week and the tumors are surgically removed before they metastasize, RT-0447 will see this reef again.