At low tide, women in Goa’s coastal villages step into riverbeds with simple scraping tools, looking for clams hidden beneath the mud.

By evening, the day’s catch may be cleaned, cooked into curry, tossed with spices, or shared as part of a family meal. Across Goa, Kerala, coastal Karnataka, the Konkan coast and Bengal, this has been a familiar rhythm for generations.

For these communities, clams have long been everyday food, shaped by tides, seasons and local kitchens.

Today, that old coastal habit is being seen in a new light.

As the world searches for protein that is lighter on the planet, clams are drawing attention for a simple reason: they ask for very little to grow. They need no feed, and their environmental impact is far lower than that of many animal proteins.

In India’s coastal kitchens, a possible climate lesson has been sitting on the plate for generations.

The seafood that needs almost nothing to grow

Global food production contributes roughly 35% of human-caused greenhouse gas emissions.

Animal-based foods dominate that footprint, despite providing only about 20% of the world’s calories. For consumers trying to balance nutrition with climate concerns, protein becomes the hardest variable to solve.

This is where clams stand apart.

Unlike most farmed seafood or livestock, clams do not need feed. 

They survive by filtering naturally occurring phytoplankton from water. There is no cultivation of soy or fishmeal, no transport of........

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