marine animals

As Long as a Bus The World's Largest Sea Snake Likely Ate Sharks

The world's largest sea snake, Palaeophis colossaeus, likely preyed on sharks and swimming dinosaurs.

Even though blue sharks are occasionally spotted in the Mediterranean, the likelihood of being attacked by one is extremely low.

Predatory Fish Which Sharks Live in the Mediterranean and How Dangerous They Are

The world's oceans are home to many species of sharks. But how likely is it to encounter sharks in the Mediterranean Sea?

Sharks Underwater with Surfer at the Surface

11 Shark Myths Examined Do Sharks Really Need to Keep Swimming Constantly to Avoid Suffocating?

Do sharks really need to keep swimming to avoid suffocation? PETBOOK investigates this and other common myths.

Sharpnose sharks of the genus Rhizoprionodon

From Pharmaceutical Waste Sharks on Drugs! Cocaine, Caffeine, and Acetaminophen Found in Animals' Blood

Sharks Off the Coast of Brazil Test Positive for Cocaine: Implications for the Ecosystem and Wildlife

Orcas are likely hunting something—perhaps a great white shark?

Unique Footage Videos Show How Orcas Hunt and Eat Great White Sharks

Orcas eat great white sharks: What was long suspected is now confirmed. Videos reveal how killer whales hunt these formidable predators.

A great white shark swims in a wave several meters high.

Regarding Hurricane Melissa Fake Videos Flood Social Media: How Likely Is a Real "Sharknado"?

In 2013, the first film of the trash series "Sharknado" was released. How likely is a shark storm of this kind? An expert explains.

Kills in 5 Minutes The Sea Wasp–the World's Most Venomous Creature

The box jellyfish is considered the most venomous creature in the world. However, it is not a "sea monster" but rather an animal with remarkable characteristics.

Study Shows Toxic Algae Cause Alzheimer's Symptoms in Dolphins

Dolphins, algae, Alzheimer's: what's the connection? Study reveals that an algal toxin causes brain-damaging changes in dolphins.

Whale sharks and other species swim in the water—and, according to a study, are most affected by potential deep-sea mining.

Study Shows Deep-Sea Mining Threatens Endangered Sharks – 30 Species in the Crosshairs of the Resource Boom

A deep-sea mining study examines the risks to marine life–and arrives at alarming conclusions. PETBOOK takes a closer look.

Sharks can also be found in the North and Baltic Seas. But don't worry—they pose no danger to humans.

Local Waters Are There Sharks in the North Sea and the Baltic Sea?

Even in local waters, there are large predatory fish. PETBOOK reveals which sharks inhabit the North Sea and the Baltic Sea.

Infinite Cell Division Did You Know? Theoretically, Lobsters Could Be Immortal

Lobsters are often said to be immortal. Biologically speaking, there's actually some truth to this myth.

Two orcas touching each other with their mouths

Observed in Nature for the First Time Orcas Exchange "Tongue Kisses"–The Reason Is Surprising

Orcas and French Kisses? Yes, this behavior does exist. However, it has only been observed in animals in captivity until now.

A whale swims through the water with an algae, seemingly using it as a scrub.

Clarifying Algae Treatment Whale Wellness: Orcas Use Kelp for Grooming Too

Marine mammals are known to enjoy playing with seaweed. However, the discovery that whales also use the plants as a scrub and brush is new.

Specialized Strategy Orcas Observed Hunting the World's Largest Sharks for the First Time

Marine biologists document for the first time how orcas hunt the world's largest sharks. They use special strategies to do so.

Collage of an underwater sea turtle and the Caribbean sharpnose puffer (Canthigaster rostrata)

Curious Phenomenon Sea turtles regularly get high from these fish.

In the Caribbean, there is a pufferfish that sea turtles love to eat, but its toxin gets them so high that they risk drowning.

Great White Shark Swims Through Water With Open Mouth, Nostrils Clearly Visible

Unique Traits of Predatory Fish Why Do Sharks Have Nostrils Even Though They Don't Have Lungs?

Why do sharks and many other predatory fish have nostrils even though they don't have lungs? The answer lies in a clever olfactory system.

An octopus waves two arms through the air.

Four Different Arm Signals Cuttlefish Wave to Each Other to Communicate

Cuttlefish wave underwater. A new study provides surprising insights into complex communication through movement and patterns.

Moray eel with open mouth and cleaner shrimp

Like in the Movie "Alien" These Eerie Fish Have a Second Jaw

Moray eels are inherently frightening. Few people know that some species have two sets of jaws equipped with sharp teeth.

Deep-Sea Creature Giant Squid Filmed Alive for the First Time — and It's Tiny!

Marine biologists have filmed a live giant squid near the South Sandwich Islands for the first time—and it was tiny!

Researchers Marvel Unique Sighting! Octopus Rides the Fastest Shark in the World

Researchers at the University of Auckland discover an octopus clinging to the world's fastest shark and riding through the waves.

Study Clownfish Actively Supply Their Anemone with Food

Clownfish and anemones are an example of a symbiotic relationship in the animal kingdom. This probably also includes active feeding.