Charity praises effort to stop Ramsgate’s Pie Factory Music closing but calls for more youth services in coastal towns

When Essex University’s Southend campus opened, it was a message of hope for a ‘left behind’ UK seaside town. Its closure will be felt far beyond its 800 students, some of whom will not get their degr...

Described by one researcher as looking ‘already dead’, the enigmatic creatures are one of the least understood species on the planet

As part of the Guardian’s Against the tide series, readers aged 18 to 30 share what they love about living in their coastal town, the challenges and why they often choose to leave

As rising tides eat away at the Saint-Pierre and Miquelon archipelago off Canada, plans to move the historic village to higher ground have divided residents

Interviews with experts and key players across four countries reveal why efforts to stop the multibillion-euro trafficking industry have failed – and how to save the endangered fish

Iida Turpeinen’s novel has been a sensation in her native Finland. On the eve of its UK publication, she talks about her compulsion to tell of the sociable giant’s plight

Experts are finding new and more humane ways to protect the last 74 southern resident killer whales

The people of Johnshaven have watched the sea edge closer and closer. Preserving the path is key to protecting their community

The faded resorts and coastal towns of Tendring in Essex offer few job opportunities but many of its 20-somethings are set on finding their way in an area with one of England’s oldest populations

The country’s fisheries and the health of its seas still rely on a method practised for nearly 1,000 years – catching skipjack tuna one fish at a time

Most of these little-known but already endangered fish have never been seen alive in their natural habitat, but are under threat from bottom trawling and deep-sea mining

Sharks could struggle to feed themselves efficiently in future, affecting marine ecosystem stability, researchers say

Helen Pidd grew up in Morecambe, and life in seaside towns has only got harder since she was a teenager. She went back to find out why

Research shows steep increases over past 30 years, after summer of strandings across Europe

The Guardian’s former north of England editor returned to Morecambe after 25 years to discover the place where she grew up has even fewer amenities for young people – and the feeling of being ‘left be...

Incidents across northern Europe on 26 and 27 July have left scientists trying to understand why so many of the deep-diving whales have appeared

As the Trump administration dismisses global heating, the coastal city is getting on with becoming one of the most climate resilient in the world. Here’s how

With a bottlenose population threatened by fishing gear, boats and pollution, campaigners on South Korea’s Jeju island are lobbying to extend legal status to the vulnerable cetaceans

Editorial: Communities by the sea have been hit by economic decline and related social problems. Empowering a new generation can help turn the tide

The seaside resort has become a byword for coastal deprivation but its youth say there’s a world of creativity bubbling under

Young people living by the sea are often in some of the most deprived areas of the country, but they say they want the chance to thrive. The Guardian is embarking on a year-long series to tell their s...

They are suffering disproportionately and without help, say researchers, and unless they are given a voice, problems will continue to mount up

Last year, a single female was recorded returning to one tributary of a river usually celebrated for its fish. Now a plan is in place to change things – but it’s proving controversial

These starfish relatives have lots of remarkable features and are a keystone species. My hope is that we will recognise how vital these charismatic creatures are

Freighters emit more greenhouse gases than jets, but a tech startup believes a simple and effective technique can help the industry change course

Ancient rituals and a profound respect for ‘Mother Earth’ bolster fragile Andean communities as the climate crisis and unchecked mining take their toll

Avian invaders have coastal communities in Britain and beyond in a flap – but people are learning how to live with them

As international tensions mount and hackers grow more sophisticated and audacious, the Nordic Maritime Cyber Resilience Centre is constantly monitoring the global threat of war, terror and piracy

A slew of global leaders met in the south of France to discuss the future of the oceans. There was ‘momentum’ and ‘enthusiasm’, but there were critical voices too

Military dogs involved in attacks on Palestinian civilians – including children – are likely to have been exported from European countries, investigation finds

When a US firm saw the seaweed was making their shellfish the ‘biggest and best’ scientists realised they’d hit upon a natural way to combat ocean acidification

Move comes after efforts at UN ocean summit to establish marine protected areas in international waters

Investment is pouring into companies promising to geoengineer a rapid change in the pH of our waters – but critics are concerned at the speed at which unproven methods are being adopted

Environmental groups welcome government proposals to clamp down on destructive fishing practice

There’s frustration among researchers that falling pH levels in seas around the globe are not being taken seriously enough, and that until the buildup of CO2 is addressed, the consequences for marine ...

Ocean acidification has already crossed a crucial threshold for planetary health, scientists say in unexpected finding

Environmental lawyer Cormac Cullinan lauded for his work to establish continent’s legal status to protect its interests

The keeper’s death led to questions over safety, rattled the tightly knit group of sentinels and renewed de-staffing fears

Experts are calling for stricter limits on numbers of those flocking to Baja California Sur to swim with the animals in the wild. But some local tour operators are not convinced

Revealed: an investigation shows how consumers buying fish in the UK are playing a role in food insecurity and unemployment in Senegal

The TV naturalist’s comments come after a Guardian investigation into the complex supply chain behind the fish on sale on Britain’s high streets

The craze for Korean culture has brought fame to the ‘women of the sea’, but not always to their benefit. Now they want to reclaim their stories to inspire a new generation

On average, five fatal whale strikes occur in the country’s waters each year, the highest in the world – and just a fraction of the total number killed, say researchers

The celebrated presenter warns of ‘modern day colonialism at sea’ as he highlights the destruction caused by overfishing and bottom trawling

The Lunar Hatch project aims to blast eggs into space, hoping that aquaculture will provide protein for astronauts on missions

Ocean-inspired artworks created using kelp-based pigment will be sold to raise funds for conservation

Almost as amazing as the knowledge we have gained in the past four decades is the fact that some people continue to deny the damage we are doing to our world