08:32Business DailyWhy whales matterBBC World Service Duration: 18 minutes Tue 19th Apr 2022, 08:32 on BBC World Service Americas and the CaribbeanAvailable for over a yearListen nowCan baleen whales rebound from near extinction and help revive ocean life? Show more GenresFactualMoneyFormatsBulletinsBrandBusiness Daily Source: BBC Online