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From Fin Whales to Blue Whales: The Whale Species Quiz
play.howstuffworks.com/quiz/whale-species-quiz
The whale may be the most magnificent mammal in the sea, but can you tell one whale from another? Take our quiz to see how much you know about the various whale species and how these creatures differ.
Skate Fish vs. Stingray: Comparing Bottom-dwelling Fish
animals.howstuffworks.com/fish/skate-fish-vs-stingray.htm
At first glance, skate fish vs. stingray confusion is extremely understandable. Both belong to the class Chondrichthyes, the group of cartilaginous fish that includes sharks. They share flat bodies, wing-like pectoral fins, and bottom-dwelling habits.
The Angel Shark, aka Sand Devil, Lurks on the Ocean Floor
animals.howstuffworks.com/endangered-species/angel-shark.htm
Is the angel shark the holiest fish in the sea? Their name certainly seems to indicate a pure and pious air, and some seafood connoisseurs say that a bite of an angel shark is like a little taste of heaven.
How Nurse Sharks Work
animals.howstuffworks.com/fish/sharks/nurse-shark.htm
Nurse sharks are mellow, sluggish sharks that hover above the ocean floor. See why nurse sharks don't have that much in common with great whites.
The Fastest Fish in the Ocean Can Swim at Nearly 70 MPH
animals.howstuffworks.com/fish/fastest-fish.htm
While there are tons of fish in the sea, only a few hold the title of the fastest fish in the ocean. You might wonder how the fastest fish swim at such high speeds.
6 Facts About the Lovely, Incredibly Destructive, Lionfish
animals.howstuffworks.com/fish/lionfish.htm
The showy lionfish is a stunning beauty. But this invasive species, which was released into the wild in the 1980s, is wreaking havoc on delicate reef ecosystems worldwide.
What's the Difference Between Manta Rays and Stingrays?
animals.howstuffworks.com/marine-life/difference-between-manta-rays-stingrays.htm
These two sea creatures can be easy to confuse. But they're actually quite different. We talked to experts to find out how to tell them apart.
Pictus Catfish: Bottom-feeders That Pick on Smaller Fish
animals.howstuffworks.com/pets/pictus-catfish.htm
If you're looking for an energetic, sleek freshwater fish to liven up your aquarium, the pictus catfish might be your perfect match.
The Frilled Shark Has a 3-Year Pregnancy Before Giving Birth
animals.howstuffworks.com/fish/sharks/frilled-shark.htm
The frilled shark (Chlamydoselachus anguineus), also known as the scaffold shark, is often called a "living fossil." This ancient shark has remained largely unchanged for millions of years, offering us a glimpse into the distant past. It's the only living species from its family of sharks.
Mudskipper Robot Helps Show How Vertebrates Evolved to Walk on Land
science.howstuffworks.com/mudskipper-robot-vertebrate-locomotion.htm
A robot to simulate mudskipper locomotion gives scientists a look into the success of the first land vertebrate ancestors, and points to our future on other planets.