Some of them, Mills points out, have a stated promise to protect biodiversity or be responsible stewards of the environment. For instance, Progressive, Kingsford, Vistaprint, Subway and IcyHot all have some mention of environmental impact or a goal of sustainability on their websites.
We've reached out to the advertisers for comment. Some have been engaging with critics about the petition, but none have yet announced that they will pull their advertising.
Repeated calls and emails to NBC Sports were not returned.
Here are five reasons why "Shark Hunters" is one of the worst shows on TV.
UPDATE 2:40 p.m. 8.27 - TripAdvisor has announced that it will also pull advertising during "Shark Hunters." The company said: "We agree that Shark Hunters is not a good fit for TripAdvisor's advertising and have directed our media agency to pull advertising during that program."