SeaWorld is acknowledging that it sent a worker to infiltrate a Norfolk-based animal rights group, which opposed the theme park.
Manby says that the company is hiring an outside firm to review its security practices.
SeaWorld San Diego worker Paul McComb was suspended last summer after People for the Ethical Treatment of Animals said he had tried to incite violence among peaceful protesters while posing as an activist. The company said Thursday that McComb is still employed by SeaWorld.
The animal rights group, better known by its acronym, PETA, said that SeaWorld's refusal to fire McComb shows that it condones corporate spying.