Underwater view of a hammerhead shark swimming in blue ocean depths, highlighting conservation concerns.

Hammerhead Sharks Face Extinction: 97% Population Drop Alarms Conservationists

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Written by John Oliver

2026-07-21

The hammerhead shark, with its distinctive wide and flattened head, is a striking figure beneath the waves. Yet, its presence is diminishing at an alarming rate.

The drastic decline

In the waters near Baja California, scalloped hammerhead shark numbers have plummeted by 97% since the 1990s, largely due to the demand for shark fin soup. This dish has fueled the killing of tens of millions of sharks each year. Once their fins are severed, these magnificent creatures are often discarded, still alive.

Close-up of hammerhead shark with distinctive head swimming in clear ocean water.

Misunderstood giants

Despite their fearsome appearance, hammerheads are rarely a threat to humans, with just over 30 recorded bites since 1580. Wildlife cinematographer Bertie Gregory, in his latest National Geographic project, spent weeks near Baja striving to document these elusive creatures.

Hammerhead shark gracefully swimming sideways in the ocean, viewed from below.
Via Unsplash Community

His team employed military-grade rebreathers to approach the sharks, as traditional scuba gear can be too noisy and frightening for them. This highlights a poignant truth: it’s not that they are dangerous to us, but they often fear us instead.

Hammerhead shark swimming in open sea, showcasing its unique head shape.
Photo by Gerald Schömbs on Unsplash

Keystones of the marine ecosystem

Sharks like the hammerhead are crucial for maintaining the balance of oceanic food webs. Their removal can lead to disastrous imbalances, affecting even the oxygen cycles that sustain life on Earth.

Documenting marine life can be crucial for raising environmental awareness. Migwa Nthiga’s climate change photographs illustrate the urgent need for conservation efforts.

Marine protected areas offer a beacon of hope, where restricted fishing supports fish population recovery. However, political challenges prevent widespread protection, especially where commercial interests dominate.

Single hammerhead shark in deep ocean with sunlight filtering through water.
Photo by Michael Worden on Unsplash

How you can help

Concerned about the future of hammerhead sharks? Organizations such as the Shark Conservation Fund, Saving the Blue, and Shark Stewards are actively involved in conservation efforts. Additionally, Misión Tiburón is instrumental in restoring the mangrove nursery habitat inside Costa Rica’s Hammerhead Shark Sanctuary. Support and donations to these groups aid in funding their essential work.

Watch Hammerhead Sharks Up Close with Bertie Gregory, now available on Disney+, Hulu, and National Geographic.

Via PetaPixel.

For those who appreciate underwater photography, a whale shark’s close-up photo celebrated in a contest presents a mesmerizing glance into marine beauty.

Sources & Links

Source: mossandfog.com

Frequently asked questions

Why is the hammerhead shark population declining?

The hammerhead shark population is declining due to the demand for shark fin soup, which has fueled the killing of tens of millions of sharks each year. Once their fins are severed, these creatures are often discarded, still alive.

Are hammerhead sharks a threat to humans?

Hammerhead sharks are rarely a threat to humans, with just over 30 recorded bites since 1580. This highlights a poignant truth that they often fear us instead.

How can people help conserve hammerhead sharks?

People can help by supporting organizations like the Shark Conservation Fund, Saving the Blue, and Shark Stewards that are actively involved in conservation efforts. Donations to these groups aid in funding their essential work, and supporting protected areas like Costa Rica’s Hammerhead Shark Sanctuary can also help.