Today’s Solutions: December 19, 2025

If you like teeth, underwater predators, and strange things, then we have some good news for you: Researchers have identified two new rare species of six-gilled sawsharks in the waters off Eastern Africa.

What makes these unusual sharks particularly extraordinary is the fact that they have six gills slits per side, as opposed to the five normally found in sawsharks. But that’s not all, as their name suggests, they are also known for their long, flat snouts, studded with teeth that allow them to hunt their prey like no other.

Finding the two species represents an astonishing discovery for researchers, as knowledge about the whereabouts of such animals in the Indian Ocean is still scarce. Their identification is also an important contribution towards evaluating their rarity and population status, as well as assessing their vulnerability to fishing operations.

Solutions News Source Print this article
More of Today's Solutions

New method uses sound waves to map soil health, stop famine, and restore farm...

BY THE OPTIMIST DAILY EDITORIAL TEAM Across the world, soil scientists are trading in their shovels for something unexpected: seismic sensors. In a breakthrough ...

Read More

This simple 15-minute mindset exercise can ease anxiety, science shows

BY THE OPTIMIST DAILY EDITORIAL TEAM A growing body of research is revealing how a short, simple activity that is done in just 15 ...

Read More

3 habits of the happiest people

Think of the happiest people you know. Do you find yourself often wondering what they are doing to maintain a general level of joy? ...

Read More

Changemakers of the week: GRuB and SparkNJ

Every day on the Optimist Daily, we report on solutions from around the world. Though we love solutions big and small, the ones that ...

Read More