Dive in Fins

01/15/2026

THE REMARKABLE LONGEVITY OF THE GREENLAND SHARK

The Greenland shark (Somniosus microcephalus) stands out as the longest‑living vertebrate known to science, with an estimated lifespan ranging from 250 to 500 years. Radiocarbon dating of eye lens proteins suggests that some individuals may reach ages close to 400 years, and possibly even approach the upper limit of five centuries.

This exceptional longevity is linked to several biological traits:

Extremely slow metabolism, driven by the frigid temperatures of Arctic and North Atlantic waters
Very slow growth rates, often less than one centimeter per year

Low activity levels, which reduce energy expenditure and cellular stress

Together, these factors allow the Greenland shark to persist for centuries in deep, cold marine environments, making it one of the most extraordinary examples of vertebrate aging in the natural world.

11/21/2025

Always follow the rules and respect wildlife

https://www.facebook.com/share/p/17wMzbiGpZ/?mibextid=wwXIfrs

Robert Porter never expected to find out what a shark’s bite felt like until one clamped down on his head in the waters off Abaco.

What began as a routine spearfishing trip for him and his friends quickly spiraled into an emergency.

Read more about what happened here: dan.org/shark-bite-while-spearfishing-in-abaco.



Photos © Courtesy Robert Porter

07/23/2025

Pretty soon this technology will be at your fingertips (research, hunting, exploration)

Aalborg University students have unveiled a 3D-printed hybrid drone that can quickly transition between air and water thanks to variable pitch propellers. Watch a video of the drone in action. C...

06/10/2025

Follow diveinfins on eBay. Buying, Selling, Collecting on eBay has never been more exciting!

03/16/2025

11/01/2024

😲

06/10/2024

Dive In Fins action - Jupiter, Fl

08/06/2023

🦈❤️

07/12/2023

🦈 Happy shark weeks folks 🦈
Reposting one of my most viewed videos - 🤙

If you love sharks and want to learn more about how to protect them, visit https://www.facebook.com/diveinfins or get involve by promoting and supporting sha...

06/21/2023

Fascinating: Tripod fish (Bathypterois grallator)- a deep-sea fish able to ‘stand’.

One of the ocean’s deepest-living fish, tripod fish are found widely in the Atlantic, Pacific and Indian oceans. A couple have been identified off the coast of Western Australia, and one was discovered near Flinders Island, just off Tasmania’s north-east coast.

They thrive in depths of up to 6000m below the surface, together with other deep-sea residents, such as the black swallower and giant squid.

Tripod fish, which grow up to 30cm long, are sometimes found sitting quietly on the ocean floor alongside another tripod fish.