The country ended its 31-year commercial whaling hiatus with cuts of the meat selling for record prices.
"The whaling industry has been ingesting a lot of taxpayers' money", she continued. "It may survive on a small scale, but it's hard to believe whale will ever be a daily meal for Japanese people again".
Japanese vessels conducting research whaling had to navigate in waters where there were no whales and could not choose the size of the whales they caught.
"The future of commercial whaling depends on how popular whale meat can be", he said.
Japan does not belong to an global whaling organisation after withdrawing from the worldwide Whaling Commission (IWC).
Japan responded to the moratorium by commencing two whale "research" programs in the North Pacific Ocean (JARPN) and the Southern Ocean (JARPA).
In the 2017-2018 whaling season, Japan caught and killed 596 whales with a "scientific research" permit from the Commission.
However, there is a risk that anti-whaling countries could file suit in global court, claiming that Japan's activities as an IWC observer do not constitute "working through appropriate worldwide organisations".
So far, two minke whales have been harpooned in the inaugural voyage. Australia's Prime Minister Scott Morrison did not directly raise the issue of whaling with his Japanese counterpart Shinzo Abe during the G20, and has indicated that he does not wish to have the Australia/Japan bilateral relationship defined by the issue. This resuming of the decision by the country of whaling in national waters confronts an global ban on whaling and has faced strong criticism from the animal welfare, as well as, environmental groups, which argue that the practice would put the already threatened population of the whale at further risk. However, Japan withdrew from the International Whaling Commission in December and resumed commercial hunting in its territorial waters and economic zone despite international outcry. "We continue to urge Japan to return to the Convention and the Commission as a matter of priority". It was originally composed of whaling nations, but an increasing number of anti-whaling member states led the IWC to adopt a moratorium on commercial whaling in 1982. Japan's actions may encourage others to rethink their stance on whaling.
Despite worldwide outcry, Japan now intends to catch 227 whales for meat before the end of the year.