H. atlanticus is commonly referred to as a "seven-armed" octopus. In the last 27 years, there have only been 3 sightings of this mysterious octopus.
A ghostly noise that was recorded near the Mariana Trench has finally been identified. According to the researchers at Oregon State University's Hatfield Marine Science Center, who documented the vocalization, the sound could have been a never before heard whale call from a minke whale.
Ghost sharks have been swimming in the deep ocean since 300 million years ago, long before the dinosaurs existed. For the first time in history of mankind, the elusive ghost shark was captured on film.
Don't go down the deep! An alleged legendary sea monster--a giant squid up to 66 feet (20 meters) long--may be lurking under the ocean.
Deep-sea fishing endangers vulnerable species that live farther underwater. To avoid permanent biodiversity loss, depth regulations are being discussed in Europe.
Researchers at University of Hawaii-Manoa and the University of Tokyo have found, to their surprise, that two types of deep-sea sharks have positive buoyancy – they float even when not moving – unlike most other sharks.
A dead giant oarfish was found washed up on a Catalina Island beach last week, providing scientists the rare opportunity to study the rare and mysterious deep-sea creature, officials said Wednesday.
Fish are known for being seemingly cold-hearted creatures, swimming the cool depths of our vast oceans. But now scientists have discovered the first fully warm-blooded fish, and it's making them question how much we really know about marine life.
Scientists have discovered that vampire squid, which live in the deep depths of the ocean, boast a unique reproductive strategy that differs from all other living coleoid cephalopods, according to a new study.
For the most part, evolution seems a lot like a lottery of mutations. The winners get to survive, reproduce, and eventually evolve. The losers disappear from all but the fossil record. Now new research has revealed that a small group of microbes and viruses are apparently cheating the system, systematically picking and choosing what mutates to help them live in some hostile environments.
Lying in deep-sea sediments are bacteria that have remained unchanged for the last two billion years, and this lack of evolution - the largest ever reported - is eluding scientists, new research says.
In the dark waters off the California coast, a rare deep-sea anglerfish was caught on camera for only about the sixth time in history, according to reports.