One of the three shipwrecks found in Tunisia's Skerki Bank during a 2022 expedition
One of the three shipwrecks found in Tunisia's Skerki Bank during a 2022 expedition

UNESCO-led mission discovers three ancient shipwrecks off Tunisian coast

According to reports, these shipwrecks are believed to date back to Roman times. Although the Mediterranean Sea is known for its rich history of maritime trade and naval warfare, the discovery of intact ancient shipwrecks remains a rare occurrence.

The shipwrecks were discovered during an operation intended to protect underwater heritage. UNESCO and the eight participating Member States launched this mission, recognizing the critical value of these sites in understanding our collective past.

Orcas photographed off the southern side of Unimak Island, eastern Aleutian Islands, Alaska
Orcas photographed off the southern side of Unimak Island, eastern Aleutian Islands, Alaska

Orcas battling strange skin disease

Scientists studying endangered southern resident orcas have noticed a steady increase of mysterious gray patches and gray targets (circular lesions which may appear on concentric rings – ed.) on the whales’ skin from 2004 to 2016. 

To date, researchers managed to identify six distinct types of lesions, with the two most common types being gray patches or targets. Some resemble tattooed skin.

They do not know the cause of the lesions and are worried that they could be due to underlying health problems in the struggling population.

A research team has demonstrated that fish think "it's me" when they see themselves in a mirror or picture.

Fish recognises itself in photographs

A new study demonstrates how animals recognise self-images.

Some animals have the remarkable capacity for mirror self-recognition (MSR), yet any implications for self-awareness remain uncertain.

In a test of MSR ability in cleaner fish, mirror-naive fish initially attacked photograph models of both themselves and unfamiliar strangers. In contrast, after all fish had passed the mirror mark test, they did not attack their own (motionless) images, but still frequently attacked those of unfamiliar individuals.