By Pat Gallen

PHILADELPHIA (CBS) — The Adventure Aquarium is ready for the holiday season. The aquarium added the world’s largest Christmas tree to the Shark Realm as part of the Christmas Underwater exhibit.

Christmas Underwater returns to Adventure Aquarium on Nov. 29 and runs through Dec. 30.

READ MORE: Officials Concerned Iconic Steeple At St. Leo's Could Collapse After 2-Alarm Fire Tears Through Tacony Church

CBS3’s Pat Gallen spoke with Adventure Aquarium employee Tom Martin.

READ MORE: Franklin Institute Hosting One-Day COVID-19 Vaccine Clinic For People With Disabilities

“We’re standing in front of the world’s largest underwater Christmas tree. It’s over 18 feet tall. It weighs over a ton,” Martin said.

MORE NEWS: Susan G. Komen More Than Pink Walk Tradition Continues In Philadelphia

Watch the video above to find out the additional surprises Adventure Aquarium’s Christmas Underwater offers visitors.