Minuscule: The Private Life of Insects (2006)

S01E02 Shell Less

A caterpillar unexpectedly encounters a group of newly hatched snails. As the baby snails grow and develop, the caterpillar strives to blend in with her newfound siblings. However, she faces a significant challenge: unlike her snail companions, she lacks a protective shell, making it difficult for her to fully belong in their world.