John, ever thought about embarking on an epic voyage across the ocean, for the ocean?

Last weekend marked one year since the Mermaid Atlantic crew returned from the world's toughest row across the Atlantic Ocean. And they're not the only ones.

We’ve had some of Britain’s most adventurous rowers take on extreme challenges to raise ocean-saving funds to fight sewage and plastic pollution.

Get inspired by their stories below - or get in touch to find out how you could use an upcoming challenge to help support our ocean-saving work.

Mermaid Atlantic

Crew: Three friends, Xav, Paul and Chris.

Mission: Take on the World’s Toughest Row Atlantic Challenge.

Why: Raise awareness of the detrimental effect of plastic pollution as well as the power of seagrass in combating climate change.

Voyage: 43 days at sea, 3000 miles rowed across the Atlantic.

Highlights: Got stalked by a marlin and nearly collided with a tanker. But also experienced pure euphoria, seeing shooting stars, flying fish and golden sunrises on the Atlantic Ocean.

Funds raised: £6,321 for Surfers Against Sewage.

Coastal Odyssey

Crew: Adam, Patrick, Joseph, Hannah, Lia and Daisy.

Mission: Take on the GB Row Challenge, circumnavigating Britain.

Why: Highlight the plight of the ocean, and contribute to vital research into the state of our oceans through their boat which collected data on microplastics and underwater noise pollution.

Voyage: 49 days at sea, 2000 nautical miles rowed.

Highlights: Achieved a Guinness World Record for being the first mixed, unsupported crew to complete this challenge.

Funds raised: £11,336.65 for Surfers Against Sewage.