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Topic: food chain
What do sand dollars look like when they’re alive?
Pristine white sand dollars have long been the souvenir to commemorate a successful day at the beach. But most people who pick them up don’t realize that they’ve collected the skeleton of an animal, washed up at the e...
Planet-changing ‘invisible’ microbes on the deep sea floor
"We're making progress at a rate that's outpacing the textbooks. We can't write textbooks fast enough to cover all of the really fundamental discoveries that are happening in the field of microbial ecology right now.....
The ‘Swiss Army knife’ legs of a house centipede
So. Many. Legs. Thirty legs arranged in a fluttery burst-like arrangement. This is the Scutigera coleoptrata, a house centipede. And though some may think they're creepy or gross, or dangerous to humans (they're not),...
Why do goats have rectangular pupils?
In this 'I Wonder Why' episode from World by Charlie, Casey Engelman wants to know why goats have rectangular pupils. Her brother and host Charlie Engelman didn't know either, so they did some research. Those hori...
How do garden eels eat?
Alexandra Khrizman and colleagues at the Hebrew University of Jerusalem and Tel Aviv University made more than 100 dives and planted cameras among garden eels to determine how they handle currents, and whether being s...
The benefits of sea cucumber poop
There are about 1,250 different species of sea cucumber across the world's oceans. This is Thelenota anax. And yes, it's doing what you think it's doing. Sea cucumber poop is surprisingly important for the ecosystem. ...
Fabulous Food Chains and The Dirt on Decomposers
Everyone eats, right? But how does that food get the energy to power you? In this episode of Crash Course Kids, Sabrina talks about the way energy moves, or flows, through an ecosystem and how that movement forms Food...
These stunning sea slugs steal ‘weapons’ from their ingested hydroid prey
Bright blues, vibrant yellows, blazing oranges, striking reds, rich purples, electric greens, hot pinks, and some milky pastels, all in pops, spots, stripes, and bold color fields. These colors belong to around 3,000 ...
Soil Life in Action: Bioturbation with and without soil fauna
Bioturbation is the mixing of (plant) residues into soils and sediments by biotic activity. It is one of the fundamental processes in ecology, as it stimulates decomposition, creates habitats for other (micro)fauna an...
A ladybug life cycle time lapse
Bright yellow eggs sit attached to a branch. Though they're vulnerable to predators (including their hatching siblings), many eggs will yield larvae that will go through metamorphosis and turn into ladybugs (coccinell...
What do bluebirds eat?
Ask any birder what birds eat and you'll hear “seeds, fruits, and insects.” But during reproduction, arguably the most important weeks of a bird’s life, 96% of North American terrestrial birds eat insects and other ar...
Long-tail macaques use stone tools to open shells
Long-tail macaques can be found frolicking in the seas of southern Thailand. It's a wonderful place to play, socialize, and keep cool. It's also the perfect place to enjoy a seafood banquet. These macaques are waiting...
A swarm of hungry moon jellies
This massive swarm of moon jellies (Aurelia aurita) swims in Alaskan waters where salmon eggs will make for an easy meal. Eggs that aren't eaten will grow into salmon and will make their way into larger bodies of wate...
The Stomphia coccinea sea anemone can swim
This sea anemone is in danger. A dermasterias sea star is coming to devour it in the sped up footage above. But hop, wobble, squirm, shimmy! The sea anemone is off and away, launching a wiggly escape from the predator...
The Very Hungry Maggot: How larva farming can help reduce food waste
How are maggots like waves in an ocean? How are they like puppies? In this fascinating Macroscope video from Science Friday, The Very Hungry Maggot, we meet David Hu, a mechanical engineering professor who's studying ...
Why isn’t the world covered in poop?
Each day, the animal kingdom produces roughly enough poop to match the volume of water pouring over Victoria Falls. So why isn’t the planet covered in the stuff? You can thank the humble dung beetle for eating up the ...
A bioluminescence expert catches a jumbo squid on camera for Blue Planet II
How do you catch sight of a jumbo squid deep underwater? Travel down in a submersible, use red light to see—most deep-sea creatures can't see red light—and then, to attract larger predators, flash the 'SOS' light patt...
Joy and Heron
When a pesky Heron tries to steal all of the worms meant for a fishing trip, little Joy tries to scare it away without rocking the boat and scaring away the fish, too. From Passion Pictures Australia, this is Joy and ...
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