NIAGARA FALLS, Ont. – A four-month investigation of Marineland by the Ontario SPCA failed to turn up evidence of animal abuse at the amusement and animal exhibition park, but the organization issued seven orders to improve water quality, animal safety and veterinary care.

In a statement late last week, Marineland said that no charges have been laid and none of the orders require immediate action. The OSPCA has kept the orders secret, saying that its investigation is incomplete, but a source within the organization told the Toronto Star that two of the orders have been fulfilled and that compliance with five others is due by the end of the month.

The source said Marineland has hired an outside expert to critique its water and filtration systems, and has started a program to provide mental stimulation for Kiska, its lone killer whale.