The group says international pressure may have prompted the change in practice.
Activists staged protests at Japanese embassies around the world on October 14 to express outrage over the continuing mass slaughter that is conducted by Taiji villagers each year between September and March.
Sea Shepherd said that it also appears the hunters hadn’t killed any distinctive bottlenose dolphins, the same species as “Flipper” from the 1960s TV show and that appears in shows at marine parks around the world.
The slaughter victims have so far been risso dolphins and pilot whales, which are also dolphins but don't have the distinctive pointed noses.
Photo: Sea Shepherd Conservation Society