Following suit with six others that have also been scheduled to perform and recently cancelled, Martin McBride and 38 Special have refused to perform at SeaWorld.

Since the release of the buzzed about documentary Blackfish, many people have become more aware of the some of the unsafe and inhumane practices that are done involving the whales at SeaWorld.

Over the weekend, REO Speedwagon became the latest musical act to cancel their performance at the theme park. Shortly after, Martina McBride joined in, and then 38 Special.

The Blackfish documentary has created a huge backlash against the Orlando theme park, and several celebrities have made a point to recommend Blackfish, and avoid SeaWorld since then, advising others to do the same.

Say no to #orcas in captivity & yes to @Blackfishmovie. See this amazing film-in theaters across the US! #blackfish http://t.co/9EHMX9hVrw

— hayden panettiere (@haydenpanettier) July 25, 2013

Blackfish is such a well made doc, and so powerful. Rent it on iTunes. And let's all boycott Seaworld together. Shame on them. #Blackfish

— olivia wilde (@oliviawilde) November 17, 2013

In a concert series that originally had 10 acts scheduled to play in a series called “Bands, BBQ and Brew,” with the latest two cancellations, only two artists remain. Justin Moore and Scotty McCreery are the two remaining artists, and while fans continue to put the pressure on, their representatives have not responded to CNN’s repeated requests for comment.

Martina Mcbride announced the news of her cancellation via her facebook page, while 38 Special did the same days after.

For those that have not had the opportunity to see the chilling film yet, Blackfish tells the story of SeaWorld’s inhumane treatment of the whales, and the news has been brought to the attention of people all over in the past year. After the documentary came out, it has been covered on RealTime With Bill Maher, CNN, and several other news outlets, in addition to being called one of the best documentaries of the year.

Martina McBride and .38 Special join a list which before this weekend included Trisha Yearwood, Willie Nelson, Cheap Trick, Heart and Barenaked Ladies, with Barenaked Ladies being the first act to drop out.

A special thank you graphic for singer Martina McBride @martinamcbride #Blackfish #BlackfishEffect pic.twitter.com/X5wudes7gE

— Voice of the Orcas (@Voice_OT_Orcas) December 14, 2013

In what was once an anticipated series of well-known musical acts, the lineup has almost completely dissapeared. According to CNN, the park’s six-week concert schedule has disappeared from SeaWorld’s website. It now simply promises “incredible concerts with top artists in classic rock and country music.”

@evanrachelwood @EllenPage Thank you both for taking the time to see #Blackfish and speak up for our Orca friends! pic.twitter.com/KRAGvqga9t

— Maryann (@Active4Oceans) October 31, 2013

With eight out of 10 acts already gone from the lineup including country star Martina McBride, and as more fans and celebrities continue to urge people to stay away from SeaWorld, is a full boycott in the near future? SeaWorld, once a park of famliy fun, has now turned into a place that nobody wants to go because of the way that the whales are being treated.

Image via Wikimedia Commons