Scientists believe that the ice shelves under the sea ice hold the keys to further our understanding of climate change. Unfortunately, diving to such areas to explore them is impossible.

How, then, can we access these areas?

Scientist Xi Yu from West Virginia University may have found the answer. She suggests deploying a fleet of marine robots, controlled by a smart mothership, to reach these inaccessible depths and transmit back invaluable insights.

A study in the Marine Mammal Science journal examines the question of why Southern Resident orcas in the Pacific Northwest harass and sometimes kill porpoises without eating them.

Such behaviour has been passed down through the generations and across social groupings, and has been recorded as far back as 1962.

The question of why comes to mind.

Not on the menu

Certainly not to eat them. Southern Resident orcas do not harass the porpoises to consume them.

The IJN Akagi, a Japanese aircraft carrier sunk during the pivotal Battle of Midway in World War II, has been surveyed underwater, offering a detailed look at the historic warship. The survey provides insights into the ship's condition and its final moments during the war.

Recent research, published in Current Biology, has uncovered intriguing insights into their cognitive abilities that challenge the notion that jellyfish lack intelligence.