Shark Teeth at Risk: Ocean Acidification Threatens Predators

Fri Jan 16 2026 18:04:04 GMT+0200 (Eastern European Standard Time)

A new study reveals that the increasing acidity of oceans could weaken the teeth of sharks, potentially disrupting their role as top predators.

A group of German scientists has found that ocean acidification, linked to climate change and human activity, may weaken shark teeth. As oceans absorb more carbon dioxide, the structural integrity of the teeth could be compromised, threatening sharks' survival and their role in the marine ecosystem. With over a third of shark species facing extinction, this research highlights the need for conservation efforts to protect these vital creatures.

Sharks are known as the fearsome rulers of the ocean, but a recent study indicates that their iconic teeth may be in jeopardy. Researchers from Germany found that rising ocean acidity, attributed to increased carbon dioxide levels from human activities, could weaken these crucial tools for predation.

According to the findings published in the journal Frontiers in Marine Science, the structural integrity of shark teeth can deteriorate under more acidic ocean conditions expected by 2300. This could negatively affect the sharks' ability to hunt and maintain their position in the marine food chain.

Lead researcher Maximilian Baum emphasized that though sharks might not experience tooth loss immediately, the long-term implications of weaker teeth could pose a serious risk to their survival amidst existing threats like overfishing and environmental pollution.

Despite the dire warnings about acidification, experts are hopeful, noting that sharks have survived for 400 million years and possess a remarkable ability to adapt. Conservationists stress that protecting sharks is vital, as many species currently face extinction risks.

As ocean chemistry continues to change, further research will be crucial to understanding its impacts on marine ecosystems, including not only sharks but other sea life as well.