# @science on Instagram - **Type:** Image - **Original URL:** https://www.instagram.com/p/DOGqb63E1wG - **Gondola URL:** https://gondola.cc/posts/34058354-science-instagram - **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/5712a535a4.jpg - **Posted:** 2025-09-02T15:00:51.000+00:00 - **Account Owner:** Science šŸ§¬ (@science) ā€” https://gondola.cc/science ## Caption The oceanā€™s chemistry is shifting in ways that could blunt one of natureā€™s most iconic weapons: shark teeth. A new wave of research shows that as seas absorb more carbon dioxide and grow increasingly acidic, the razor-sharp teeth of blacktip reef sharks and other species begin to corrode, crack, and weaken.ā  ā  Sharks normally offset tooth loss by growing new ones, often tens of thousands over a lifetime. But when acidity accelerates wear faster than replacement, even these top predators face a critical disadvantage. In lab experiments, teeth kept in seawater adjusted to the pH levels scientists expect by the year 2300 showed about twice as much damage as those in present-day conditions. Cracks, holes, and root corrosion reduced both sharpness and structural strength.ā  ā  The culprit is ocean acidification, driven by carbon dioxide emissions dissolving into seawater. Global average pH has already fallen from 8.2 to about 8.1 since the industrial revolution, a 30 percent increase in acidity, and may dip to 7.3 in centuries to come. Such changes are already devastating corals and shellfish. Now evidence suggests they could compromise the teeth of apex predators as well, with potential ripple effects across marine ecosystems.ā  ā  Researchers caution that living sharks may mitigate some damage through faster tooth replacement or remineralization, though this would demand more energy in already stressed environments. Sensitive species, especially those with slower replacement cycles, may be most at risk. Because sharks are essential to ocean food webs, weakened teeth could cascade through entire ecosystems, undermining stability and resilience.ā  ā  The message is clear: preserving ocean pH through reducing carbon emissions is vital, not only for reefs and shells but also for predators whose survival depends on the integrity of their bite.ā  ā  #science #ocean #sharks #climatechange #marinebiology #acidification #predators #ecosystems #research #environment #conservationā  Source: 10.3389/fmars.2025.1597592 ## Stats - **Views:** 0 - **Likes:** 1,176 - **Shares:** 0 - **Comments:** 27 ## Tags conservation, science, research, climatechange, ocean, ecosystems, sharks, environment, acidification, marinebiology, predators --- Copyright (c) Gondola