A new research shows human activity is changing the sound of the Earth’s oceans and seas. Scientists say the sound changes of our oceans, seas, and other waterways affect many marine （海洋的） animals – from very small shrimps to huge whales.

Sound travels very far underwater, Francis Juanes, an ecologist at the University of Victoria in Canada, told the Associated Press. For fish, he explained, sound is probably a better way to sense their environment than light. Sounds help fish and other marine animals survive and communicate with each other. Sounds also help some ocean animals find food and avoid their hunters.

However, increased noise from humans is making it harder for these animals to hear each other. The noise is coming from shipping traffic, underwater exploration, and other noisy human activities. For many marine animals, their attempts to communicate are being masked （掩盖） by sounds that humans have produced. Experts explain that masking happens when one or more noises in the water block sound important to a marine animal’s living. The overall number of marine animals has gone down by about half since 1970. Some studies show the stress from human noise might also affect the immune system as well as reproductive health or behavior. “Imagine having to raise your kids in a place that’s noisy all the time,” said Joe Roman, a marine ecologist at the University of Vermont.

When people think of problems facing the ocean, we often think of climate change, plastics, and overfishing. But noise pollution is another thing we need to be monitoring. “Sound pollution may be easier to deal with than other ocean problems,” Scientist Juanes says. “If we make something for the ocean, think about how to make it quieter.”

Soon enough, we will lose some of the most amazing sites on Earth!

The Great Barrier Reef

Rising air temperatures will cause sea temperatures to rise as well.All life supported by the oceans will be affected with this shock to their ecosystem.Coral are some of the most vulnerable marine animals and we are already watching whole reefs disappear.The Great Barrier Reef in Australia is no exception and will continue to shrink as the temperatures rise！These reefs are some of the best in the world for diving, but they will soon disappear!

Venice

Sprawling across(横跨)hundreds of small islands in Northeast Italy，Venice is at extreme risk of sinking into the Adriatic Sea.Rising sea levels are in fact a serious threat to many coastal cities located at sea level.Lucky for us，however，Venice is developing a series of sea walls to protect the city in times of high tide.

Glacier(冰川)National Park

Glacier National Park was once covered by over 150 glaciers, but by 2005 it only had about 27！Located in Montana, Canada, this park is over a million acres and has a huge plant and wildlife population.As temperatures rise, the glaciers and ice melt, which will upset the ecosystems sustaining over a thousand plant species and hundreds of animals.

The Amazon

The cause behind the disappearance of these fantastic places ultimately comes down to humans.Our expansion usually requires cutting down forests for land, fuel and materials，but rarely considers the consequences.These forests are sources of food and medicine for just about everyone on the planet!

What will happen if we lose these valuable places and beautiful destinations？！

Australian scientists have successfully tested a new method for freezing and storing coral larvae(珊瑚幼虫), which they say could eventually help restore the wild coral reefs(珊瑚礁) threatened by climate change. They are struggling to protect coral reefs as rising ocean tem peratures damage ecosystems.The Great Barrier Reef has suffered four events of becoming white in the last seven years including the first one during a La Nina phenomenon, which typi-cally brings cooler temperatures.

Frozen coral can be stored and later reintroduced to the wild, but the current process requires some modern equipment including lasers(激光). The scientists say a new lightweight   “cryomesh(冷冻网)” can be produced cheaply and better protect coral. In a December lab tri- al,the world’s first with Great Barrier Reef coral, they used the “cryomesh” to freeze coral larvae at the Australian Institute of Marine Sciences(AIMS). “If we can protect the coral, we’ll have tools for the future to really help restore the reefs, and this technology for coral reefs in the future is a real game-changer,” said Mary Hagedorn, Senior Research Scientist at AIMS.

The “cryomesh” was previously tested on smaller and larger kinds of Hawaiian corals. Some trials on the larger kinds failed. But then other trials are continuing with larger varieties of Great Barrier Reef coral. The trials involved scientists from AIMS, the Smithsonian National Zoo and Conservation Biology Institute,the Great Barrier Reef foundation and the Taronga Conservation Society Australia as part of the Reef Restoration and Adaptation Program.

The technology,which will help store coral larvae at - 196 ℃, was invented by a team from the University of Minnesota’s College of Science and Engineering. It was first tested on corals by PhD student Nikolas Zuchowicz. “This new technology that we’ve got will allow us to do that, and it can actually help to support the growing and restoration of wildlife in water,” said Jonathan Daly of the Taronga Conservation Society Australia.