Marine life

“Swimming Chief” was the king of the sea 500 million years ago: study

Pop research provides an insight into the evolution of sleep

Scientists don’t know why all these sea creatures swim in circles

“No ice”: warming seas cool Quebec seal tourism Natural environment

These sea slugs can pull their own head out and grow their body

Sepia has been able to delay gratification, the first for invertebrates

Cuttlefish have the ability to exercise self-control, according to the study Environment

Barnacles may contain clues in searches lost at sea

Very few of the world’s rivers are harmless to humanity, according to the study Natural environment

Octopuses despite the sharp fish they “don’t like”: they study