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Water is a unique molecule. Most liquids become denser as they cool down, but when water freezes, it becomes less dense, allowing ice to float. If ice did not float, a lot of animals would be in trouble. In fresh water ecosystems, animals rely on the top layer of water freezing over, which actually allows heat to be trapped underneath and keeps them alive through the winter.
Though it sounds like something out of a Halloween movie, ghost-fishing is actually a serious problem. Ghost-fishing occurs when abandoned or lost nets and traps continue to catch animals, leaving then to die in the nets. Ghost fishing nets are a common source of marine debris that causes the needless death of numerous marine animals. Remember to properly dispose of all your netting when fishing!
Can you imagining putting a person in a time capsule and then opening it up 80 million years later to discover that they’re still alive? Scientists have found a bacterial colony buried 100 feet deep in the Pacific Ocean floor that hasn’t received light, oxygen, or food for over 80 million years, and they’re still alive! A very slow metabolism and dividing to make identical copies of themselves allow these bacteria to survive for so long.
Ground breaking scientific research has found that the hole in the ozone layer caused by the use of chlorofluorocarbons (CFCs) is actually driving a change in the wind patterns and the current patterns around the South Pole. It’s important to remember that activities we do and the products that we use on a daily basis can have a drastic effect on our planet.
Even though it’s harder for humans to hear when underwater, sound travels much faster and farther in the ocean than in the air. That allows some animals, like humpback whales, to communicate over very large distances and is why you can sometimes hear them singing loudly while underwater during the winter months.
Photo: ARC Centre of Excellence in Coral Reef Studies After the most widespread and severe coral bleaching event on the Great Barrier Reef, scientists are continuing to watch the health of the reefs closely. In October 2016, 6 months after the high temperature event, scientists have returned to conduct surveys and measure coral survivorship and mortality. They have found that many of the corals that bleached have now died on the northern areas of the Great Barrier Reef and this mortality is compounded by predation from coral-eating invertebrates like snails. Scientists are concerned that... (more)