December 3, 2020 — Simmering in pots around the world is a food that could spark a revolution. Most of us have probably eaten it at some point, but it’s an overlooked part of our diet. This natural source of protein is laden with essential nutrients that could fulfil the dietary needs of nearly one billion people in the most vulnerable populations on the planet. It could be a viable alternative to intensively-farmed meats such as beef. And it comes with smorgasbord of environmental and sociological gains.
The animals that are the source of this food require no feeding, need no antibiotics or agrochemicals to farm. And they actively sequester carbon. They can even protect fragile ecosystems by cleaning the water they live in. Welcome to the remarkable and unglamorous world of the bivalve.
This biological corner of our oceanic ecology is not as attention-grabbing as fish or mesmerising as a deep-sea octopus. Instead it includes the evolutionarily simpler family of shell-dwelling creatures consisting of mussels, clams, oysters and scallops. These hinge shelled molluscs have quietly embraced the lower reaches of the food chain as filter feeders, sustaining themselves on microscopic organic matter present in the waters of their immediate environment.
Their lowly status, however, perhaps means their potential has been largely overlooked. But as the world attempts to find ways of feeding a growing population with less environmental impact, many experts believe we may need to make these shellfish a larger part of our diet.
“Bivalves have the remarkable potential to provide people with food that is not only environmentally sustainable but also nutrient dense,” says David Willer, a zoologist at the University of Cambridge in the UK.