Saving the White Rhino: A Fight Against Extinction

The Northern White Rhino is functionally extinct, with only two females remaining on Earth, according to the Natural History Museum. Conservationists are currently attempting to revive the subspecies through In Vitro Fertilization (IVF) and the use of surrogate mothers, while the more populous Southern White Rhino remains under constant threat from illegal poaching.

The survival of the white rhino species now depends on two distinct strategies: the high-tech biological rescue of the Northern subspecies and the physical protection of Southern populations from organized crime networks. The Natural History Museum notes that while the Southern White Rhino was once brought back from the brink of extinction, the Northern White Rhino has reached a point where natural reproduction is no longer possible.

What is the difference between Northern and Southern White Rhinos?

Northern and Southern White Rhinos are two distinct subspecies of the white rhino (Ceratotherium simum). According to the IUCN Red List, the Southern White Rhino is currently classified as “Near Threatened,” with a population estimated at roughly 17,000 individuals. This population recovered significantly during the 20th century due to strict conservation efforts in South Africa.

The Northern White Rhino subspecies faces a different reality. The Natural History Museum reports that only two individuals remain: Najin and her daughter Fatu. Both live under 24-hour armed guard at the Ol Pejeta Conservancy in Kenya. Because there are no living males of the Northern subspecies, the population cannot recover through natural breeding.

How is the BioRescue project attempting to save the species?

The BioRescue project, a global collaboration involving the Natural History Museum and other scientific institutions, is using advanced biotechnology to create embryos. Scientists have harvested eggs from the remaining two females and are fertilizing them with frozen sperm from deceased Northern White Rhino males.

Because the remaining females cannot carry a pregnancy to term, the project relies on Southern White Rhinos to act as surrogates. According to BioRescue reports, this process involves several stages:

• Extraction of oocytes (eggs) from the remaining Northern females.
• Conversion of skin cells into stem cells to create additional eggs.
• IVF fertilization using cryopreserved sperm.
• Implantation of the resulting embryo into a Southern White Rhino surrogate.

This approach marks a shift from traditional conservation to “de-extinction” technology, where the goal is to reintroduce a genetically viable population into the wild.

Why does poaching continue to threaten the Southern White Rhino?

Despite their larger numbers, Southern White Rhinos are targeted by poaching syndicates for their horns. The Natural History Museum states that the demand for rhino horn is driven primarily by markets in Asia, where the material is used in traditional medicine or as a status symbol of wealth.

The trade is illegal under the Convention on International Trade in Endangered Species (CITES), yet poaching persists. This creates a precarious situation where the Southern White Rhino—the only hope for the Northern subspecies’ surrogacy program—is itself at risk of a population crash.

What happens if the white rhino goes extinct?

The loss of the white rhino would have cascading effects on the African savanna. The Natural History Museum describes rhinos as “mega-herbivores” that shape their environment by grazing on specific grasses. This activity creates a mosaic of different vegetation heights, which provides essential habitats for other species of birds, insects, and smaller mammals.

The extinction of the Northern White Rhino would represent the first time a subspecies has been lost entirely to human-driven poaching and habitat loss in the modern era of advanced genomic science. It serves as a precedent for how biotechnology may be the only remaining tool for species that have fallen below the minimum viable population threshold.

Current efforts focus on maintaining the health of Najin and Fatu while refining the IVF process. The success of the BioRescue project depends on the ability to successfully implant an embryo and ensure the surrogate Southern White Rhino can carry the calf to birth.