Eight beluga whales jump in unison out of a bright blue indoor pool, flipping their tail fins and spewing water as a packed audience cheers and snaps photographs.

Whale shows like the one at Chimelong Ocean Kingdom, located in Zhuhai on China¡¯s southern coast, are proliferating at new marine parks across the country, driving demand for threatened species.

Orcas and beluga whales are among the marine animals caught up in a shadowy trade in which individual cetaceans ¡ª often caught illegally ¡ª sell for millions of dollars, according to scientists, executives and activists.