Seaworld Orlando opened its newest attraction Antarctica: Empire of the Penguin last month on May 24.

Today, Southwest Airlines further promoted Seaworld’s Antarctica attraction when it unveiled a Penguin One livery in celebration of Southwest and SeaWorld’s 25-year partnership. The penguin, officially of the gentoo species, joins two other Seaworld-branded jets that feature Shamu 1 and Shamu 2.

The Southwest livery is the last in a series of marketing efforts the led up to the May opening. A roadshow of penguins, a giant ice dome, and prizes traveled throughout seven U.S. cities to promote the new attraction. The theme park also released a ring tone that squawks like a penguin and a Seaworld Antarctica app.

Marketing efforts were not in vain; the opening day line took 4 hours to get through.

Photo Credit: Southwest unveils its new penguin livery in celebration of a 25-year partnership with SeaWorld. Screenshot / Southwest Airlines