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Creature Feature: Whale shark
Being the largest fish in the ocean (and the largest non-mammal vertebrate in the world) is just one of the surprising things about the whale shark.
Read MoreCreature Feature: Basking Shark
If the twilight zone had a yearbook, the basking shark would definitely be named “Most Chill.”
Read MoreCreature Feature: Giant Ostracod
Although their name makes them sound huge, the largest species of giant ostracod only measures about an inch long. Size is relative, however: that’s more than 30 times the size of average ostracods.
Read MoreCreature Feature: Glass squid
Glass squid spend their lives going with the flow. Literally. Filled with ammonium chloride, a solution that’s lighter than seawater, they float effortlessly through the ocean in search of mates and food.
Read MoreCreature Feature: Dragonfish
Dragonfish aren’t actually dragons, but with a slender, luminous barbel hanging from their chins and glowing blue-green lights covering their bodies, this species is downright otherworldly.
Read MoreCreature Feature: Lancetfish
Piercing the darkness of the twilight zone, the aptly-named lancetfish stops at nothing in pursuit of its target. Measuring up to two meters (6.6 feet) in length, lancetfish are some of the biggest creatures in the twilight zone.
Read MoreCreature Feature: Elongated Bristlemouth
With its needle-like fangs and long lower jaw, the elongated bristlemouth lives up to its name. Flexibility may be the key to this deep-sea fish’s success.
Read MoreCreature Feature: Black Swallower
In the ocean twilight zone, the ability to swallow more than you can chew is a matter of survival. But the black swallower takes the cake—or rather, the fish.
Read MoreHow does bioluminescence work?
Deep in the ocean there’s very little sunlight. But if you could swim down there, it would look a bit like the night sky. Why is this?
Read MoreCreature Feature: Bean’s bigscale
Very little is known about this bigscale or “ridgehead” fish.
Read MoreCreature Feature: Copepod
This tiny but ubiquitous zooplankton plays a superpowered role in the marine ecosystem, competing with Antarctic krill for the title of “most animal biomass on earth.”
Read MoreCreature Feature: Pelican Eel
While this deep-sea fish was first named after a pelican, as researchers learned more about its behavior, other names emerged. “Gulper eel” sums up the fish’s ability to expand its throat and stomach to accommodate prey.
Read MoreCreature Feature: Snipe Eel
Meet the slender snipe eel—a deep-sea minimalist with 750 vertebrae, jaws that never close, and an anus on its throat. In the twilight zone, weird wins.
Read MoreCreature Feature: Stoplight Loosejaw
With red and green “stoplights” around its eyes and a trap-like jaw, the stoplight loosejaw both earns its moniker and defies evolutionary expectations.
Read MoreCreature Feature: Hatchetfish
The hatchetfish was born ready. With pelvic bones tilted downwards and large eyes pointing upwards, this little fish is poised for whatever morsel—or threat—comes its way.
Read MoreCreature Feature: Pteropod
In the weird and wonderful menagerie of the twilight zone, the pteropod stands out for its delicate grace. Fluttering through the water column on translucent “wings,” the more abundant shelled variety (Thecosomata group) are known as “sea butterflies,” while the shell-less adult Gymnosomata are known as “sea angels.”
Read MoreHow are seashells made?
One of the most striking features of our beaches is seashells. Their whorls, curves, and shiny iridescent insides are the remains of animals. But where do they come from?
Read MoreHow do I become an oceanographer?
Like all scientists, oceanographers are curious. Students who are curious about all things ocean might make great oceanographers. So how do you become one?
Read MoreHow is beach sand created?
Beaches can be white, black, green, red and even pink. What creates those different colors? Why is some sand soft and fine, but other types feel rough? Where does beach sand come from, anyway?
Read MoreWhat’s the difference between climate and weather?
We often hear about the weather. We also hear about climate. The two terms are related. But they are not the same thing. What’s the difference?
Read MoreWhy is pressure different in the ocean?
As anyone who has tried diving to the bottom of a deep pool knows, all that water gets heavy—fast. Extreme pressure is one reason why the ocean floor is still largely unexplored.
Read MoreWhat causes ocean waves?
A trip to the ocean means sun, wind, and waves. Surfers ride them. Children play in them. Swimmers dive beneath them. But what causes waves?
Read MoreDoes the ocean produce oxygen?
It’s easy to think of the world’s forests as the planet’s “lungs.” Trees pump out oxygen—the same stuff we breathe in. But does all our breathable air come from just land?
Read MoreWhy is the ocean blue?
One idea is that it reflects the sky. But if we sink below the surface, the blue color remains. Here, the water isn’t reflecting the sky. So why is the ocean blue?
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