What is the main product sourced from the Atlantic seaboard?

The main product sourced from the Atlantic seaboard is sand and gravel. This region is renowned for its extensive beaches and coastal areas where sedimentary materials, such as sand and gravel, are abundant and accessible for extraction. These materials are vital for various industries, including construction, where they are used as foundational aggregates for buildings, roads, and other infrastructure.

The Atlantic seaboard's geography, characterized by its sandy shores and river deltas, contributes to the easy availability of these resources. While options like oil and herring may also be extracted or harvested from different marine environments, they do not primarily define the Atlantic coast's most significant product output in the context of geological resources. Shell sands, though pertinent to coastal ecology and certain local industries, do not surpass sand and gravel in volume and economic importance in this specific region.