Francisco Cortés Ojea, the commander of one of the ships, named the island Nuestra Señora del Socorro.

In 1724, the Middelburgsche Commercie Compagnie, a Dutch trading company, dispatched an expedition to the west coast of South America.

On May 30, it was agreed that the ship's steward, Laurens Wartels, and two sailors would stay overnight in a self-built tent on the island so that they had time to collect more vegetables and, if possible, shoot birds.

In another unfortunate incident, the Liberian oil tanker Napier ran aground on Guamblin Island in June 1973.

Following the rescue of the crew, Chilean Hawker Hunters were deployed to set the Napier ablaze and burn off the oil, thereby preventing further pollution.

Guamblín is, among other things, a breeding ground for the Sooty shearwater (Ardenna grisea), but also for gulls, cormorants and ducks.

The island is largely covered with vegetation, mainly evergreen oceanic trees and shrubs such as the Nothofagus nitida, the Drimys winteri and the Weinmannia trichosperma.

Guamblín is very difficult to reach by boat because mooring is almost impossible due to the roughness of the sea and the rocky coast.