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SALT SPRING ISLAND, B.C. — A family of sea otters emerges from the ocean and rambles up the rocky shoreline, while a great blue heron in search of a meal pokes at a wall of rocks.

Fountains of water squirt upwards from clams that have buried themselves across the beach.  

Ken Thomas, standing on a rocking boat just off British Columbia's Salt Spring Island, marvels at the beauty and bounty of the ancient Fulford Harbour sea garden.

He reflects on how the long row of rocks piled along the shoreline represents both past and modern-day West Coast Indigenous culture. 

"I'm like, 'My ancestors touched this, were part of building this.' It's something more special than a pile of rocks to hold clams," said Thomas, the fisheries, wildlife and natural resources director for the Penelakut Tribe on southern Â鶹´«Ã½Ó³»­Island.

For years, academics wondered about the origins of the long string of rocks piled along the tide line. The answer came when they spoke to local First Nations, who said the rocks were sea gardens created by their ancestors as cultivation sites thousands of years ago. 

Indigenous Peoples used the tides to trapclams, mussels, kelp and fish in the shallows once the water receded.

Now, Indigenous leaders hope to to gain approval for clam harvesting at the sea garden site on Salt Spring Island's coast, and another at nearby Russell Island in Gulf Islands National Park, both of which are undergoing restoration. They are thousands of years old.

Thomas said on a recent trip to the sites that all participants want to ensure the clams and other food from the gardens are safe to harvest, which involves testing by the Department of Fisheries and Oceans, the Canadian Food Inspection Agencyand Environment and Climate Change Canada.

He said he's optimistic harvesting approval could come within one year, although others suggest it could be three or four years. 

Indigenous nations, Parks Canada, scientists and academics are jointly participating in the restoration of the sea gardens, located along ancestral territories of Coast Salish First Nations who travelled the Gulf Islands trading and gathering food.

The COVID-19 pandemic halted efforts to restore the sea gardens, but the rebuilding work is resuming, Thomas said.

"When the tide comes in and out, it's got the seeds floating around in the current, and if you've got a wall there, the seed will get stuck behind the wall when the tide goes out and settle into the beach," said Thomas.

"These gardens have been here for generations and generations, pre-contact," he said.

Elizabeth May, Saanich-Gulf Islands member of Parliament and former Green Party leader, said the presence of the rock walls on B.C. beaches had confounded scientists for years.

"We are, as settler-culture Canadians, blind to what's right in front of us," she said. "A wall along the side of an island, and to know that for quite a long time our expert geologists we're baffled by these walls. Where did they come from? How were they formed?

"How about the obvious thing: Indigenous people moved the rocks to create a place to ensure food supplies of multiple species," said May. 

The work to restore the sea gardens involves aeration, debris removal and some harvesting and marks them as much more than heritage zones, said Nicole Norris, a First Nations partnerships co-ordinator who works for the Solicitor General's Ministry. 

"We're not just here removing and filtering rocks through a wall," she said. "We're creating a sustainable food source in the same way that our old ones did."

Adam Olsen, the Gulf Island region's Green representative in the B.C. legislature, said sea gardens were managed for thousands of years until colonial settlers banned Indigenous Peoples from the beaches.

"This is an example of environmental racism," said Olsen, who's a member of the Victoria-area Tsartlip First Nation. "These policies are used to deliberately disconnect Indigenous people from their lands."

The work to jointly restore the sea gardens is "inspirational," considering past government policies of prohibiting access and disregarding Indigenous knowledge, said Erich Kelch, the sea garden project's restoration manager for Parks Canada.

"It's foundational how government and First Nations can be working together in a positive way on the land that's taking care of it for future generations," he said.

For the longest time, the government disregarded and even disbelieved the traditional Indigenous practices of managing the land, he said. 

"And this is trying to change that, recover that and restore that and build a better future," Kelch said.

Thomas said he once considered moving rocks as a form of exercise, but when he's at the sea gardens it becomes a matter of cultural rebuilding.

"It's more than just a clam bed," he said. "It's more than just a rock wall. It's the connections there that our people have."

This report by The Canadian Press was first published Sept. 18, 2022.

Dirk Meissner, The Canadian Press