PETA won't stop:
http://www.orlandosentinel.com/business/tourism/os-bz-cfb-tourism-column-02202017-story.html
"In December, People for the Ethical Treatment of Animals submitted a resolution calling for the retirement of SeaWorld’s orcas to ocean pens.
"PETA owns SeaWorld shares. Investors that own enough stock in a public company can place such resolutions on its proxy statement. Investors vote on them at the annual shareholder meetings.
...
"SeaWorld has written to the U.S. Securities and Exchange Commission asking whether the staff agrees the proposal can be excluded.
"In its letter, SeaWorld argues that PETA’s proposal is vague. Also, the company says, “it is well-known to the proponent that no `seaside sanctuaries’ currently exist.”
"PETA has tried several times to get SeaWorld investors to vote on the issue. The group had to withdraw one resolution after SeaWorld said its shares didn't meet the minimum value needed. PETA said the value fell beneath the minimum required because of SeaWorld's stock decline. PETA’s original resolution was blocked in 2014 because federal rules require shareholders to have held stock for at least a year before submitting resolutions. SeaWorld had been a publicly traded company for less than a year, so no stockholder could meet that threshold."
http://www.latimes.com/business/la-fi-0428-peta-seaworld-20160427-story.html
"SeaWorld may have announced last month that it is phasing out captive orcas for public display, but the People for the Ethical Treatment of Animals wants the theme park to go even further and send its marine animals to "
'seaside sanctuaries.'
...
"But SeaWorld officials said in a statement that the discussion is a non-starter. Given the ages of the animals, the length of time they've spent with humans and the relationships they've formed with other whales, SeaWorld said transporting the orcas to sea pens would do more harm than good."