Oysters and mussels are abundant under the waves of Saldanha Bay - South Africa's first sea-based aquacultural zone.
But the oyster farmers and small scale fishermen who work here fear the calm of this underwater world is about to be shattered.
In a bid to alleviate South Africa's crippling power cuts, there are plans for a floating gas-turbine generator.
The 415-megawatt ship, operated by Turkish company Karpowership, would be moored at Saldanha, around 80 miles north of Cape Town, for two decades.
Skipper Christie Links fears the boat will scare away fish.
"But who says the fish will return to the bay if the Karpowership is here? And to think it's a big ship, it's noisy, it's generating heat and everything, and over a period of twenty years, no. It's not a good thing for us."
South Africans regularly suffer blackouts with state utility Eskom struggling to provide consistent supply.
Prolonged delays to Karpowership's bid, which includes more ships at two east coast ports, could disrupt South Africa's plan to plug the energy shortfall with 2,000 megawatts of emergency power.
But delays there are.
The South African government has suspended an environmental authorization application.
That was in response to complaints from the Green Connection environmental justice group that Karpowership had failed to conduct specialist studies into underwater engine noise.
Kevin Ruck is the owner of the Blue Sapphire Pearls oyster farm and a trained marine biologist.
He fears the heat and noise will stimulate harmful algae blooms that could render his oysters inedible.
"We don't believe it can just be benign sitting there because it is generating hot water and it is generating a noise factor which can affect the organisms we cultivate."
Karpowership SA said its environmental impact assessments for all three sites "demonstrate little impact to the surrounding air and water environments".