Mako: Island of Secrets (2013)

S3E2 Seeing Is Believing

As marine park staff embark on an investigation into sightings of a legendary sea creature, the mermaids scramble to devise a plausible story to deter any further scrutiny. They must cleverly navigate the situation to protect their secret world from being exposed, all while ensuring that the truth remains hidden beneath the waves. With time running out, the stakes grow higher as they work together to maintain their enchanting existence.