A new iPhone app is making waves in the commercial shipping world by providing an early warning system that aims to reduce maritime collisions with endangered whales.
Environmental authorities are investigating the deaths of more than 800 dolphins that have washed up on the northern coast of Peru this year.
A stolen fairy penguin has been returned to its mate at Sea World.
A trio of men faces charges after allegedly stealing a penguin from Sea World on the Gold Coast of Australia's Queensland and then bragging about it online.
It was more than 40 years ago, but Ken Nedimyer still remembers the first time he went diving in the Florida Keys.
Ken Nedimyer and his nonprofit are working to restore endangered coral reefs in the Florida Keys.
Jane Velez-Mitchell talks to Marine Mammal Specialist Ric O'Barry about the troubling trend of dolphin deaths in Cape Cod.
The number of unexplained dolphin deaths on Cape Cod, Massachusetts, rose Friday, with rescuers tallying the toll at 103.
The environmental group Sea Shepherd has offered a $10,000 reward for information that leads to the conviction of those responsible for shooting at least seven sea lions in Washington's Puget Sound.
Environmental campaign group Greenpeace has warned that if oil leaks from the stricken cruise liner Costa Concordia it could cause an environmental disaster, threatening marine life including birds, whales and sharks.
Japan on Friday handed over to Australian authorities three anti-whaling activists held aboard a Japanese vessel after illegally boarding the ship to protest Japan's annual whale hunt in Atlantic waters.
Japan said Tuesday that it would hand over to Australian authorities three Australian anti-whaling activists being held aboard a Japanese vessel, but that it would press on with its annual whale hunt in the seas near Antarctica.
Three Australian activists are being held aboard a Japanese ship Monday after illegally boarding the vessel to protest Japan's annual whale hunt in Antarctic waters.
Prisoners in ice, more than 100 Beluga whales in far eastern Russia risk death unless rescued soon.
The Australian government has announced plans to establish the world's largest protected marine area in the Coral Sea.
SeaWorld employees on Tuesday testified at a federal job safety hearing that, while the behavior of killer whales is is extremely predictable, the job of working with a 6-ton marine mammal carries a calculated risk.
A Costa Rican organization calls for a ban on finning. CNN's Rafael Romo reports.
For millions of years, sharks have been the kings of the oceans, the top of the food chain.
Can killer whales sue SeaWorld for enslavement?
Onetime nursery school teacher Gale McCullough explains how the photo site Flickr helps her global whale research.
Want to help save the humpback whale? Pick up a camera and start taking pictures, says Gale McCullough, a "fluke matcher" at Allied Whale, a research group.
The third installment of our Going Green series looks at cutting-edge ideas from around the globe.
Environmentalist Philippe Cousteau takes a look at a baby sea turtle on Cape Island, South Carolina.
The government has revised its rules on sea turtles to try to decrease the number killed every year and reduce the threats they face.
CNN's Kaj Larsen sees firsthand how the Navy trains dolphins. For more, watch CNN Presents Sunday, July 31, 8p ET/PT.
The U.S. Coast Guard and several California state agencies are investigating how five Brown Pelicans turned up partially covered in oil near Santa Barbara this week.
With the season of backyard barbecues upon us, we thought you could use a history lesson on everyone's favorite lawn ornament. From the plastic bird's birth to its modern perch atop the pyramid of campy Americana, here's the quick-and-dirty on the hot pink queen of kitsch.
An emperor penguin discovered thousands of kilometers away from Antarctica with a bellyful of sand is recovering after an endoscopy Monday, a New Zealand zoo official said.
The emperor penguin that made its way to New Zealand survived a surgery to remove twigs, stones and sand from its belly.
A young emperor penguin discovered thousands of kilometers away from its home might survive ingesting a bellyful of sand, New Zealand zoo officials said.
No matter how many times he steers the 450-passenger Seabourn Sojourn through Norway's Lofoten Islands, captain Hamish Elliott eagerly anticipates his favorite point: the entrance to Trollfjord, a fairytale-like landscape with towering cliffs on either side.
No comedian of the past two decades has stretched himself -- and I don't just mean his face -- as much as Jim Carrey. Yet recently, it feels as if the karmic entertainment forces have been stretching him back to earlier days.
Legions of jellyfish spoiled the Memorial Day weekend for those trying to enjoy the beach in Florida. WFTV reports.
Rescuers worked feverishly Friday to save some of the pilot whales who stranded themselves in shallow waters near the Florida Keys.
Volunteers work through the night to save beached pilot whales. WSVN reports
What scientists say is the largest concentration of endangered right whales ever spotted in one location is giving researchers an unusually rich opportunity to study the animals and their feeding habits.
Nearly a year after the start of the Gulf of Mexico oil spill, some wildlife is recovering, while other species could need significant help, according to a National Wildlife Federation study released Tuesday.
Dead baby bottlenose dolphins are continuing to wash up in record numbers on the shores of the Gulf of Mexico, and scientists do not know why.
On an island chain located halfway between Africa and Argentina, local authorities say a massive penguin rescue operation is under way.
Rescuers try saving tens of thousands of Northern Rockhopper penguins after an oil spill in the south Atlantic.
They are the largest animals on the planet and spend around 90% of their lives underwater, surfacing to breathe for only fleeting moments.
Human activity and climate change have left about 75% of the world's coral reefs threatened, putting the livelihoods of many countries that depend on the ocean ecosystems at risk, according to a report released this week.
The famed albatrosses of Midway Atoll took a beating from the tsunami, but their population will survive, say biologists on the islands.
CNN's Gary Tuchman describes the scene in Kesennuma, Japan, more than a week after the quake and tsunami.
The massive waves that churned across the Pacific after the Japan earthquake last week swept away nests protecting seabird chicks unable to fly, leaving scores dead west of Hawaii.
Five months after the Deepwater Horizon explosion unleashed a torrent of oil into the Gulf of Mexico, a male dolphin washed up on Louisiana's Gulf Coast just barely alive.
The mom-and-daughter pair have a VIP visit with dolphins, jellyfish and Beluga whales in Vancouver
Floods have devastated the landscape of the state of Queensland, Australia, but they also present a high risk to the Great Barrier Reef.
The chemistry of the world's oceans is changing at a rate not seen for 65 million years, with far-reaching implications for marine biodiversity and food security, according to a new United Nations study released Thursday.
For most divers, a shark in the water can inspire fear, or even dread. Greg Marshall wanted to hitch a ride.
The planet's seas and oceans are richer and more diverse than scientists suspected, the biggest survey of marine life has revealed -- but many mysteries remain.
Penguins didn't always come in black and white, paleontologists said Thursday, citing the discovery of a 36-million-year-old fossil of a bird that, in its day, waddled nearly 5 feet tall.
Word that a teenager climbed aboard a whale for a ride has sent Australian officials to the beach, to warn others not to try such a stunt.
For nearly 50 years Ron and Valerie Taylor have been filming sharks at close quarters, bringing the lives of the ocean's most fearsome predators to TV and the big screen.
A lifelong nature lover, Oscar Aranda studied biology in college and knew he wanted to work somehow with animals at sea.
Oscar Aranda patrols the beaches of Puerto Vallarta, Mexico, to protect endangered sea turtles and preserve their eggs.
A beachgoer in a remote area of northern New Zealand found a horrific sight Friday morning -- 58 pilot whales stranded on Karikari Beach.
In 2008 Lisa Ling investigated the threat to the shark population brought on by the demand for shark fin soup.
Few members of the animal kingdom have grabbed our imagination as much as sharks. From 1975's summer blockbuster "Jaws," to 2004's animated film "Shark Tale," these marvels of the deep have been a staple in U.S. pop culture -- a trend that continues as viewers this week watch the Discovery Channel's latest edition of "Shark Week."
With oil levels seemingly low in the Gulf, will oil cleanup resources be pulled out prematurely?
The blowout is stopped. The oil disaster that began with an explosion 100 days ago has not ended by any means. But we seem to be seeing a murky ending to the beginning of the crisis.
Brazilian authorities are rescuing stranded penguins on the beaches of Rio de Janeiro. CNN's Rafael Romo reports.
Biologists suspect that unusually cold waters off the coast of Brazil were responsible for the deaths of more than 550 penguins that washed up on shore in the past 10 days.
Four hundred Canada geese from Brooklyn's Prospect Park were herded into crates and euthanized last week in an effort to reduce their number near New York's airports, according to U.S. Department of Agriculture.
CNN's Brooke Baldwin reports on the plight of the sea turtles in the Gulf.
Anti-whaling activist Peter Bethune was given a two-year suspended prison sentence and five years' probation Wednesday by a Tokyo district court judge for his role in boarding a Japanese whaling ship.
The family of anti-whaling activist Peter Bethune reacts to the news he'll receive probation and a suspended sentence.
Researchers scanning the Peruvian desert for whale fossils have stumbled upon the remains of a "sea monster" three times the size of a modern day killer whale.
After just two days of closed-door negotiations, the leaders who had gathered at the International Whaling Commission in Agadir, Morocco, announced no agreement was reached on the IWC chair's proposal to improve whale conservation.
The oil disaster in the Gulf of Mexico could trigger a massive manatee rescue. CNN's David Mattingly reports.
With the utmost care and a healthy dose of respect, Monica Ross brought the pontoon boat to a crawl, shut its engine down, and asked for quiet. She was careful not to disturb the small antenna, which floated on the surface of the Crystal River marking the location of Coral, an 800 pound manatee.
Long before the brown pelican came to symbolize the tragedy of the Gulf oil spill, the giant bird stood for something much greater: survival against all odds.
From pests to attractions, whale shark tourism has revived the fortunes of a Philippine village.
"Welcome to Donsol, the home of the gentle giants," Alan Amanse says smiling broadly at us as we awkwardly scramble onto the traditional fishing boat.
The actor films a PSA asking Obama to help save the whales
CNN's Gary Tuchman reports on how birds and other sea life drenched in oil are being cared for.
In some ways, a catastrophe of this magnitude could not have happened in a worse place. Or at a worse time of year.
You used to know them as maps, but in a Web 2.0 world they're now called geographic information systems (GIS) and they could play a key part in saving the world's endangered coral reefs.
As the "H2O Below" charter boat leaves the dock and heads into Pensacola Bay, it is chock full of divers.
A massive Chinese cargo ship is leaking oil after running aground near Australia's Great Barrier Reef.
Located only 16 kilometers from Rio de Janeiro, Niteroi Zoo is home to dozens of animal species from this tropical region of Brazil. But lately the zoo has gained more recognition for its work in rescuing animals and returning them to their natural habitat than for its size or animal variety.
Atlantic bluefin tuna will not be added to a list of banned exports, following a vote on Thursday afternoon in Doha, Qatar.
A trendy California sushi restaurant charged by federal authorities with serving whale meat offered an apology Monday, saying it "ignored its responsibilities" to endangered species.
The tragic death of a trainer at Sea World last week revived a number of long simmering questions. While we still grapple with "how did this happen?" the central question for many revolves around the role of large mammals -- like Tilikum the killer whale -- in zoos and aquariums: Should they be there or not?
In 2002, a male killer whale, or orca, who had been on public display in concrete tanks for 19 years, swam off on his own into the Atlantic Ocean.
CNN's Kiran Chetry talks to a SeaWorld official about why one of its killer whales turned on his trainer.
Killer whales can weigh up to 22,000 pounds, and may be as long as 32 feet, according to the National Oceanic and Atmospheric Administration. They often travel in groups of up to 50, being highly social.
The director of an Oscar-nominated documentary about dolphin slaughter says the SeaWorld killer whale attack that left a trainer dead earlier this week could have been prevented.
Florida's endangered manatees are dying because of unusually cold weather. CNN's David Mattingly reports.
The unusually cold weather that struck Florida in January did more than damage crops and citrus trees.
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