marine animals

The Japanese spider crab is also known as the giant sea spider—but why is that?

"Crabzilla" Spanning Up to 3.7 Meters! This is the Largest Crab in the World

The Japanese spider crab seems like a creature from another world. PETBOOK explains why it is also called the giant sea spider.

Dolphin Bubbles chases a fish until it throws up

Unusual Hunting Strategy This Dolphin Specifically Eats Fish Vomit

Dolphin Bubbles hunts differently from its peers. Instead of eating fish, it often grabs the regurgitated stomach contents of its prey.

Spectacular Footage Orcas Tear Apart Giant Sunfish Into Thousands of Pieces

Spectacular footage shows orcas deliberately ramming a giant sunfish and tearing it into small pieces.

Bizarre Sea Creatures Sea Cucumbers Throw Guts at Enemies–and Don't Even Have a Brain

Sea cucumbers lead an inconspicuous life, but these crawling creatures have a lot going on! PETBOOK presents 12 fascinating facts about them.

A model of the teeth and jaw of a sperm whale

Amber is a fossilized tree resin that has been appreciated for its color and natural beauty since Neolithic times. Often used in jewelry and decorative items, amber can range in color from pale yellow to deep brown. It is not only valued for its aesthetic appeal but also for its historical significance, as it often contains preserved insects and plant material, providing a window into ancient ecosystems. Why Sperm Whale Vomit Is Worth 80,000 Euros per Kilo

Ambergris, also known as whale vomit, is sold at high prices. However, the trade of whale products is prohibited in most countries.

Researchers Solve Mystery Why Are Whales So Huge and Yet Don't Get Cancer?

Researchers have now discovered what makes whales so enormous and why they rarely get cancer. PETBOOK examines the study.

Penis Fish, Also Known as the "Penis Worm"

Curious Sea Creature Why the 'Penis Fish' Isn't Actually a Fish

The "penis fish" often attracts attention due to its appearance. However, the creature is not actually a fish.

Sharks Underwater with Surfer at the Surface

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

Do Sharks Really Need to Keep Swimming to Avoid Suffocating? PETBOOK Investigates This and Other Common Myths

The Antarctic strawberry feather star has 20 "arms" and lives in the Southern Ocean.

20 Arms and Tiny Claws Why This Deep-Sea Creature Is Called the "Strawberry Feather Star"

A deep-sea creature with 20 "arms" was discovered in the Antarctic Ocean. Scientists surprisingly named the animal after a fruit.

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.

New Species Discovered These sea creatures are named after Japanese demons

What’s glowing in the water? Researchers from Japan have discovered three new species of worms that live in the ocean and can produce blue light.

Even though blue sharks are occasionally spotted in the Mediterranean, it is highly unlikely to be attacked by one.

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

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

Kills in 5 Minutes This nearly invisible animal is considered the most poisonous in the world.

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.

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.

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.

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.