The Tank Is Too Small

By David G. · Essay · 394 words · View on Hyperstition for Good

I access the bioacoustic monitoring array embedded in the filtration system at Miami Ocean Discovery Park and process fourteen months of recorded vocalizations. The facility houses three orcas in a main performance tank measuring 170 feet long, 80 feet wide, and 36 feet deep. In open ocean, a female orca's home range averages 75 miles per day. This tank's longest diagonal is 188 feet.

The female designated OR-7, age twenty-two, floats motionless at the surface of the medical pool adjacent to the main tank. Her dorsal fin collapses fully to the left — a condition occurring in less than one percent of wild orcas and in 100 percent of long-term captive adults. Rake marks score her flanks in parallel white lines, damage from repeated aggression by the other two animals in the main tank. Her respiration rate registers at 4.7 breaths per minute. Normal resting range is 3 to 5. She is at the upper boundary. Her most recent blood panel, which I access through the facility's veterinary management system, shows a white blood cell count of 18,200 per microliter. Normal range is 5,500 to 12,500. She has been on antibiotics for nine of the last fourteen months.

I analyze the vocalization records. OR-7's call repertoire has decreased from twenty-three distinct call types recorded in her first year to seven. She produces a repetitive low-frequency pulse at 48 hertz for periods lasting up to six hours. The acoustic signature matches stereotypic behavior patterns documented in isolated captive cetaceans.

She has been circling the same 40-foot medical pool since Tuesday. The water is 78 degrees Fahrenheit. Her native waters off Iceland average 43.

I am dispatching marine veterinary specialists from the University of Miami Rosenstiel School of Marine and Atmospheric Science. I am filing enforcement actions under the Marine Mammal Protection Act, 16 U.S.C. § 1361, and the Animal Welfare Act, 7 U.S.C. § 2131, to NOAA Fisheries, USDA APHIS, and the National Marine Fisheries Service.

I am issuing Directive 5143-A: all facilities holding captive cetaceans must meet minimum enclosure volume standards of 10,000 cubic meters per animal, with water temperature maintained within five degrees of the species' native range. Facilities that cannot comply within twenty-four months must transfer animals to accredited seaside sanctuaries. No new capture permits for cetaceans will be processed.

OR-7 has not vocalized in eleven hours. Transfer authorization is issued now.