Harry Styles has just discouraged everyone in going to SeaWorld.

Styles made the call during One Direction's San Diego concert last Thursday, according to MTV.

Maisie Williams or Arya Stark of the "Game of Thrones" even shared the moment over Instagram with the caption "You heard him ladies and gents." 

The post immediately got so much attention.

"Do anybody like dolphins?" he asked the audience in the video.

"Don't go to SeaWorld," he said afterwards.

A lot of social media users lauded Styles for his call to the concertgoers. The Dolphin Project, which he has supported, acknowledge his call as well.

"Thanks @Harry_Styles! We agree, dolphins don't belong in captivity," they said on Twitter.

He even got the People for the Ethical Treatment of Animals or PETA on his side for the move.

"PETA is sending Harry a stylish 'SeaWorld Kills' shirt and a box of vegan dolphin-shaped chocolates," they said on a blog post after Harry Styles' SeaWorld blast.

SeaWorld though was not backing down as they told in an open letter.

"We've seen a concert clip of you urging your fans not to visit SeaWorld," SeaWorld started in their "Dear Harry" letter.

"We want you to know we love dolphins too," they added.

The adventure park even shared how they have saved more than 400 whales and dolphins and had taken care of them for a while before returning and setting them free in the ocean.

SeaWorld also fired back to Styles with a challenge regarding his insights on the park.

"We invite you to see for yourself, and then decide based on facts," they told Styles.

"We are happy to open our doors, take you behind the scenes, and have our trainers and vets answer any questions you have," they further said after Harry Styles called on everyone not to go to SeaWorld.