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Watch One Ocean online: Episode 4 The Changing Sea

In our final episode, The Changing Sea , we discover that the ocean is sending us clear signals. Off the rugged and beautiful coast of British Columbia we meet scientists and fishermen who are shocked at the recent arrival of a voracious new creature – the Humboldt squid. This monster-sized squid native to the equatorial waters of Mexico has moved north and ushered in a cascade of changes to the ecosystem. Their arrival is part of a disturbing pattern that is emerging with species movement being tracked around the world. In The Changing Sea we illustrate how the ocean’s chemistry and systems are being compromised by increased acidity, less oxygen and warming temperatures. The changes to the timeless rhythms of birth and renewal are being felt everywhere – even on coral reefs. In the idyllic waters of the Bay of Naples, we get a glimpse of our future ocean, thanks to the mythic Mount Vesuvius. As scientists swim through lush green seagrass beds, they collect creatures whose shells are dissolving, and we discover that this amazing place has a terrible secret. It has been naturally acidified for millennia – could this be our ocean’s future? Our guides to the hidden depths of the sea are some of the planet’s most innovative and charismatic marine scientists, and the people who live and die by the sea. Fast-paced and engaging, the series is visually stunning, and gives viewers a deeper understanding of the Ocean’s unbelievable complexity. Our telling of the journey mixes powerful animation, special effects and striking pictures shot in HD. The visual beauty and style of this series gives audiences an emotional connection to the past, present, and future of the ocean. Compelling experiences shared with dedicated and passionate scientists connect audiences intellectually to the beautiful symmetry that exists within its depths. One Ocean captures a fragile, interconnected world that knows only one constant: change. It is a world that we could not exist without.

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