The squid-like cuttlefish has tricks up its non-sleeves for eluding the ocean's fiercest predator, the shark, and others that would snatch it up for prey.
More than 17,000 marine species, including whales, sharks, rays and fish, remain threatened due to a lack of marine protected areas.
What does "wilderness" mean? Is there a reason, in all cases, to try to bring back or shore up threatened species? To what are we bringing them back? Author M.R. O'Connor asked these and other questions while looking at the humans and animals involved in pretty significant conservation stories, including that of the Northern Right Whale, a yellow toad whose habitat is under a Tanzanian waterfall, and the White Rhino.
Increased levels of carbon dioxide in warmer waters may impede a shark's ability to hunt successfully, resulting in diminished growth rates.
Newly discovered fossils indicate that giant sharks swam throughout ancient oceans 170 million years earlier than researchers previously thought.
Giant prehistoric teeth from an extinct species of shark known as Megalodon recently washed up on a beach in North Carolina. Since little is known about this ancient species, the newly discovered teeth may help researchers unlock more clues.
A rare shark that's referred to as a sofa shark or false catfish was recently captured off the coast of Scotland. This is only the second time such a specimen has been seen near Scotland.
A hawksbill sea turtle found off the coast of the Solomon Islands is the first biofluorescent reptile ever discovered. The sea turtle was "glowing" green and red as it swam by researchers observing corals in the Pacific Ocean.
North Carolina, where seals were rarely seen years ago, now has a colony or two. New England and California seal colonies are both up in number.
The National Oceanic and Atmospheric Administration tagged a female hammerhead shark two months ago. With the use of satellite-tracking tag, the researchers observed the shark swimming unexpectedly far for food.
The 2015 Coastal Shark Survey, one of surveys that have taken place every two to three years since 1986, recorded 2,835 sharks that were captured and tagged for monitoring.
The Australian government recently launched a $250,000 campaign to increase surveillance and shark tagging in an attempt to reduce shark attacks.
Despite their long, long time on Earth, sharks and ray-finned fishes are losing in the competition of species proliferation. An evolutionary biologist has findings regarding land vs. water, and predictions for other biodiversity patterns.
For three years beginning in August, 400 underwater video locations all over the globe will record valuable information on sharks, rays and skates and their relationship to reefs.