Octopuses are known to rapidly change colors during sleep, but it's still unclear whether they dream like humans do.
- The clip is from an upcoming PBS TV show called "Octopus: Making Contact."
- Octopuses have thousands of color-changing cells under their skin called chromatophores that can change colors almost instantly.
- Scientists, however, still aren't sure exactly how octopuses coordinate all of these color-changing cells to form particular patterns.
Humpbacks swap songs at remote group of islands in the South Pacific.
- A whale's song reflects its geographical and social history.
- A new study identifies for the first time a major migratory crossroads where whales meet.
- The discovery sheds light on the mystery of how whale songs evolve across the Pacific.
It's only the second pocket shark specimen ever discovered.
- The pocket shark is an extremely rare deepwater fish about which little is known.
- This new specimen, first discovered in 2010, measures just 5.5 inches long and has pocket glands thought to emit a bioluminescent fluid.
- The finding "underscores how little we know about the Gulf [of Mexico]," wrote one researcher involved with the recent study.
New research reveals a major shift in what pressures life used to face.
- For the vast majority of the evolutionary history of ocean life, sudden changes in climate and oceanic chemistry had a huge impact on what life could flourish and what life could not.
- But about 170 million years ago, this changed. The ocean became more stable, and things like predator-prey relationships started to dominate how life evolved.
- The reason for this sudden change? Calcifying plankton came to dominate the oceans.
A comprehensive interdisciplinary paper removes any doubt that orcas don't belong in marine parks and zoos.
- Researchers present a detailed catalogue of the hardships captive orcas face and the damage done to them.
- The study draws parallels between known human chronic stresses and entertainment and research facility conditions.
- The evidence offers a damning response to perplexed apologies offered by proprietors of such parks, aquariums, and zoos when an orca dies.