What animal does Moana's grandmother transform into?

Moana’s grandmother, Tala, transforms into a manta ray.

After Tala dies, she returns in spiritual form as a luminous manta ray. Her appearance reflects her deep connection with the ocean and reassures Moana during the heroine’s dangerous voyage. Tala’s manta-ray spirit guides and encourages Moana at a crucial moment when she doubts whether she can continue.

The transformation is part of the film’s spiritual imagery, not a conventional physical disguise performed during Tala’s lifetime. Tala is Moana’s paternal grandmother and an important keeper of the island’s history: she understands that their ancestors were voyagers and supports Moana’s calling to restore Te Fiti’s heart. The manta ray is therefore associated with Tala’s enduring presence and guidance, while animals such as Pua the pig and Heihei the rooster are living companions encountered during Moana’s journey.