Sharks are often called the kings of the ocean. With sharp teeth, powerful bodies, and an important role in marine food chains, they seem almost unstoppable. However, new research shows that even these ancient predators are vulnerable. Sharks and ocean health are closely linked, and a growing problem called ocean acidification is now putting sharks at serious risk. Scientists warn that changes in ocean chemistry could damage sharks’ teeth and threaten the balance of life in the seas.
According to a study published in the journal Frontiers in Marine Science, scientists have found that increasing ocean acidity can weaken sharks’ teeth. The acid can cause tiny holes and cracks, making teeth less strong and less effective for hunting.
Why are oceans becoming more acidic?
Ocean acidification happens when humans burn fossil fuels like coal, oil, and gas. This releases carbon dioxide into the air. Some of this carbon dioxide dissolves into seawater, making the oceans more acidic over time.
As acidity rises, it begins to affect marine animals that rely on strong shells, bones, or teeth, including sharks.
Why teeth matter so much to sharks
Sharks depend on their teeth to survive. They have multiple rows of teeth, and when one tooth falls out, another moves forward to replace it. Some sharks grow tens of thousands of teeth during their lifetime.
However, if acid weakens the teeth faster than sharks can replace them, they may struggle to catch and eat food. This can lead to hunger, weaker sharks, and falling populations. Sharks are top predators. They keep ocean ecosystems healthy by controlling the number of other marine animals. If shark numbers drop, the balance of the ocean can be disturbed, affecting fish populations, coral reefs, and even food supplies for humans.
This study shows that climate change and pollution do not just harm small or weak creatures. Even powerful animals like sharks are affected. Scientists say protecting oceans by cutting pollution and slowing climate change is crucial to keeping marine life healthy.
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