(CNN) -- A California state legislator is proposing to ban the captivity of killer whales for entertainment at SeaWorld in the wake of CNN's controversial documentary "Blackfish."
"Like the elephant -- the largest land mammal in captivity -- we have realized that orcas are more complex than most other marine mammals and require more space, have a more complex social structure and most importantly need their family network (pod) for a happy and healthy life," said a fact sheet by state Assemblyman Richard Bloom, a Democrat from Santa Monica. "Orcas simply do not belong in captivity."
Bloom was scheduled to hold a press conference Friday to announce the legislation with "Blackfish" director Gabriela Cowperthwaite, two former SeaWorld orca trainers and an animal welfare activist.
A Bloom statement described the proposal as "landmark legislation calling for comprehensive improvement to orca protection laws in California."
Currently, there are no laws prohibiting the captive display of orcas, but there are federal laws governing the care, capture and research use of the killer whales, Bloom said.
The documentary, produced by Magnolia Pictures and acquired by CNN Films, recounts the 2010 death of longtime SeaWorld trainer Dawn Brancheau by a killer whale named Tilikum, a 12,000-pound bull.
The film challenges the concept of keeping killer whales for entertainment and implies Tilikum had been driven to madness by captivity.
Since then, a fiery controversy has erupted.
SeaWorld strongly disputes the allegations that "Blackfish" makes and called the film grossly one-sided and the product of animal activists.
In advance of the lawmaker's press conference, San Diego-based SeaWorld had yet to see the proposed legislation but described the scheduled participants to join Bloom as well-known "extreme animal rights activists, many of whom regularly campaign against SeaWorld and other accredited marine mammal parks and institutions," said spokeswoman Becca Bides.
"Included in the group are some of the same activists that partnered with PETA in bringing the meritless claim that animals in human care should be considered slaves under the 13th Amendment of the U.S. Constitution -- a clear publicity stunt. This legislation appears to reflect the same sort of out-of-the-mainstream thinking," Bides said in a statement.
"We engage in business practices that are responsible, sustainable and reflective of the balanced values all Americans share."
People for the Ethical Treatment of Animals said the proposed legislation "has the potential to end the deep injustice of exhibitions of captive marine life," said spokesman David W. Perle.
"PETA and kind people around the world have called on SeaWorld to retire these deprived orcas to a seaside sanctuary, but the park continues to defend its overt cruelty," Perle said in a statement.
The proposed law would end performance-based entertainment for all killer whales in California, captive breeding programs and the export and import of genetic material, and the import and export of orcas within the state.
Also, the proposal would retire all captive killer whales to sea pens if available and would allow retired orcas to be on display but not perform. The bill would limit the amount of human interaction for trainer safety, according to Bloom's fact sheet.
Currently, California has 10 captive killer whales, and seven of them were captive-born, according to Bloom.
In the past 50 years, California has lost 14 orcas, 12 of which were caught in the wild, Bloom said.
"After the tragic death of SeaWorld trainer Dawn Brancheau, the public has begun to question the moral justification of keeping orcas in captivity for our general entertainment," Bloom's fact sheet said. "As a state we should lead the way in ending captivity for entertainment purposes and should be ensuring our current captive population general welfare needs are taken care of, and that we end any future captivity whether it be by capture or captive breeding programs here in California."
One animal trainer, Grey Stafford of Arizona's Wildlife World Zoo & Aquarium, criticized the proposed law, which he said "collapses under its own weight of inconsistencies, particularly with respect to animal welfare and future breeding."
"We still have a lot to learn about the killer whales," said Stafford, who used to train orcas.
The killer whale shows ensure the animal and its ocean habitat remain in the public consciousness.
"I am more concerned about the welfare of all species," Stafford said. "Out of sight means out of mind."
By Michael Martinez, CNN
You may also like...
Beach Treasure: Lost wedding ring found 8 months later
Nudist Lawsuit: Blind woman sues for having service dog refused
Reptile Invasion: Exotic "tegu lizards" taking over Tampa Bay
Dream Date: High schooler taking NFL cheerleader to the prom
Underwater Secret: Hidden caves beneath Weeki Wachee
Send in the Clowns: Clown shortage threatens the nation
Sasquatch on Tour: "Dead Bigfoot" on display in Texas
Eat Up: Yoga mat chemical found in hundreds of store foods
#ShortYellows: Florida quietly shortened yellow lights
Kittens shot: Officer shoots kittens in front of children
Popular photo galleries:
Faces of Meth: Devastating before and after photos of meth abusers
Trayvon Martin Shooting: Trayvon Martin crime scene photos and George Zimmerman injury photos
Hooters Winners: Winners of the 2013 Hooters swimsuit pageant
Rejected: Funny Florida license plates rejected by the DMV***warning graphic***
Deadly sinkhole: Home collapses, man dies in giant sinkhole
Florida Sex Offenders: Look up sex offenders in any Florida neighborhood here
Restaurant Inspections: Look up inspection reports for any Florida restaurant here