Sharks and the 2/3 Scaling Law: A Hidden Link

Sharks are fascinating creatures. They come in all sizes. Some are tiny, like the lanternshark. Others are huge, like the whale shark.

Despite their differences, they all follow a special math rule. This rule is called the 2/3 scaling law. It's been around since the 1800s. It helps explain how size affects living things.

The Scaling Law

The law says that as an animal grows, its volume increases faster than its surface area. This makes it harder for the animal to meet its needs.

But sharks seem to follow this rule perfectly. A recent study looked at 54 shark species. They used 3D scans to measure their surface area and volume.

Surprising Results

The results were surprising. Sharks of all shapes and sizes obey the 2/3 scaling law. This is true even for sharks that live in different places.

• Some sharks live in the open ocean.
• Others live near the bottom.
• Some can even warm their muscles.

But none of them break the scaling law.

Why Do Sharks Follow This Rule?

One reason might be energy. Changing the surface area could be too costly. It might require too much energy.

Another reason could be development. Building a body is complex. Changing one part can affect other parts. So, sticking to the scaling law might be the easiest way.

This idea could apply to other animals too. It's a big question. How much of evolution is about working within limits?

Importance of the Research

This research is important. It shows that some features might not be about ecology. They might just be the most efficient options.

This could help us understand how sharks cope with climate change. It could also help in conservation efforts. Engineers might even use these findings to build better underwater robots.

Open Questions

This study doesn't have all the answers. But it opens up new questions.

• How much of life is about innovation?
• How much is about working within limits?

These are big questions. They could help us understand life in all its forms.