We recently reported that six hammerhead sharks at Ocean Park, died one after the other, every hour. Refresh you memory here.
The Park has finally found that the deaths were caused by a series of malfunctioning equipment. The malfunctioning water-purifier was releasing ozone (electrically charged oxygen molecules) and the ozone was not detected due to a concidental fault in the sensor that monitored the ozone levels.
A spokeswoman said the levels of ozone by-products in the water is still in a safe range to most fish and shark species, unfortunately the hammerhead sharks, particular the large females that died, were more sensitive to ozone and its by-products.
The park is currently being criticised for not announcing the deaths of creatures at the park, seemingly covering up their faults. About 15 of the 23 hammerheads taken in by the park in 2009 have died, but the details of their deaths were not released. Animal activist groups are fighting for more transparency by threatening the park with a boycott. Read more about it here!
Source: SCMP
Photo: Paulo Ordoveza, Flickr
