Card Trivia:Sea Koala
- This card has a counterpart: "Tree Otter".
- Both cards are named for the same pair of animals, the koala and sea otter.
- Their Japanese names are based on a portmanteau of "koala" and "rakko" (Japanese for "sea otter"), while their English names are based on each animal inhabiting the other's environment.
- Both cards are hybrid creatures based on their namesakes; this monster is a koala with otter-like traits, reflecting the portmanteau used for its Japanese name that has the word for "koala" first.
- Both cards have effects that alter the ATK of monsters on the field and require you to control another Beast monster in order to activate it.
- Both cards are Fusion Material for the Fusion Monster "Koalo-Koala".
- Both cards are named for the same pair of animals, the koala and sea otter.
- This monster appears in the artworks of "Darkfall" and "Out of the Blue".
