Apparently once the Japanese are done with their "research" they can sell the meat, which is highly prized in Japan.
There are also "traditions" where the Japanese will get an entire school of dolphins or pilot whales and will beat them or machete them to death.
They run them up on shore and kill them. Then eat or eat and sell the meat.
And while the crew is on board the Steve Irwin and their triamarane the Bob Barker, the crews eat a vegetarian diet only.
They really only want vegetarians to apply, they are too left wing for Green peace.
I don't watch the show, but have seen a show or two in the 1st season.