A humpback whale briefly swallowed a kayaker off Chilean Patagonia before quickly releasing him unharmed. The incident, caught on camera, quickly went viral.

Last Saturday, Adrian Simancas was kayaking with his father, Dell, in Bahía El Aguila near the San Isidro Lighthouse in the Strait of Magellan when a humpback whale surfaced, engulfing Adrian and his yellow kayak for a few seconds before letting him go.

Dell, just metres away, captured the moment on video while encouraging his son to stay calm.

This Chilean kayaker had a lucky escape when he was swallowed and ejected by a humpback whale off Patagonia. (AP)

“Stay calm, stay calm,” he can be heard saying after his son was released from the whale’s mouth.

“I thought I was dead,” Adrián told The Associated Press. “I thought it had eaten me, that it had swallowed me.”

He described the “terror” of those few seconds and explained that his real fear set in only after resurfacing, fearing that the huge animal would hurt his father or that he would perish in the frigid waters.

Despite the terrifying experience, Dell remained focused, filming and reassuring his son while grappling with his own worry.

“When I came up and started floating, I was scared that something might happen to my father too, that we wouldn’t reach the shore in time, or that I would get hypothermia,” Adrian said.

The kayaker’s ordeal was captured on video by his father, just metres away. (AP)

After a few seconds in the water, Adrian managed to reach his father’s kayak and was quickly assisted. Despite the scare, both returned to shore uninjured.

Located about 3000km south of Santiago, Chile’s capital, the Strait of Magellan is a major tourist attraction in the Chilean Patagonia, known for adventure activities.

Its frigid waters pose a challenge for sailors, swimmers and explorers who attempt to cross it in different ways.

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Although it’s summer there, temperatures in the region remain cool, with minimums dropping to 4 degrees and highs rarely exceeding 20 degrees.

While whale attacks on humans are extremely rare in Chilean waters, whale deaths from collisions with cargo ships have increased in recent years, and strandings have become a recurring issue in the last decade.

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