Octonauts: Above & Beyond (2021)

S4E18 Lost Bottlenose Dolphins

Title: Stranded Bottlenose Dolphins Plot: During a low tide, two bottlenose dolphins find themselves trapped in a coastal saltwater lagoon. As the water recedes, they face the challenge of navigating their way back to the open sea. With the clock ticking, they must rely on the help of nearby beachgoers and marine rescuers who band together to devise a plan to free the playful pair before it's too late. Tension mounts as the tide continues to drop, putting the dolphins in greater peril.