Turritopsis dohrniiA tiny jellyfish can revert to an earlier life stage under stress.7 min / Easy CordycepsA group of fungi is famous for parasitic life cycles and dramatic hosts.8 min / Easy Ophiocordyceps unilateralisThe fungus behind zombie-ant behavior manipulates insects with unnerving precision.8 min / Easy PrionMisfolded proteins can spread disease without DNA or RNA.10 min / Medium Kuru (disease)A prion disease revealed links between culture, medicine, and protein misfolding.8 min / Medium Fatal familial insomniaA rare inherited prion disease attacks sleep itself.8 min / Medium ErgotismFungal toxins in grain caused convulsions, hallucinations, and historical outbreaks.8 min / Easy ManchineelA Caribbean tree is infamous for toxic sap, fruit, and smoke.7 min / Easy Amorphophallus titanumThe corpse flower blooms rarely and releases a powerful odor.7 min / Easy Rafflesia arnoldiiA parasitic plant produces enormous flowers with a carrion smell.7 min / Easy WelwitschiaA desert plant can live for centuries with only two continuously growing leaves.7 min / Easy Pando (tree)A massive clonal aspen colony may be one of Earth's largest organisms.7 min / Easy Armillaria ostoyaeA fungal network in Oregon is often cited as a gigantic living organism.7 min / Easy Lake NatronA caustic lake in Tanzania preserves animals in stark mineral crusts.7 min / Easy BrinicleA sinking tube of cold brine freezes seawater below Antarctic ice.6 min / Easy Sailing stonesRocks in Death Valley move across a dry lakebed under rare conditions.7 min / Easy Blood FallsAntarctica's red outflow reveals iron-rich water and hidden microbial worlds.7 min / Easy Catatumbo lightningA Venezuelan lightning hotspot produces extraordinary storm frequency.7 min / Easy Morning Glory cloudA rare rolling cloud formation can stretch for hundreds of kilometers.7 min / Easy BioluminescenceLiving organisms produce light for hunting, signaling, defense, and wonder.8 min / Easy ExtremophileLife thrives in heat, acid, pressure, radiation, and other brutal conditions.8 min / Medium Hydrothermal ventDeep-sea vents support ecosystems without sunlight.8 min / Medium Whale fallA whale carcass can sustain deep-sea communities for decades.7 min / Easy Deep-sea gigantismSome deep-ocean animals grow far larger than shallow-water relatives.7 min / Easy TardigradeMicroscopic animals survive extremes that would kill most life.7 min / Easy AxolotlA salamander famous for regeneration remains larval throughout its life.7 min / Easy Mimic octopusAn octopus changes shape and behavior to imitate other animals.7 min / Easy Mantis shrimpA marine crustacean has powerful strikes and unusual vision.7 min / Easy Portuguese man o' warA floating colonial organism is often mistaken for a jellyfish.7 min / Easy Electric eelA fish uses high-voltage electric discharges for hunting and defense.7 min / Easy Crown shynessThe upper branches of some trees leave narrow channels between neighboring crowns.7 min / Easy Fairy circle (arid grass formation)Bare circular patches form repeating patterns across dry grasslands in Namibia and Australia.8 min / Medium Movile CaveA sealed Romanian cave supports an ecosystem powered largely by chemosynthesis rather than sunlight.8 min / Medium Lake VostokA vast Antarctic lake has remained buried beneath kilometers of ice for millions of years.9 min / Medium Lake KivuA deep African lake stores enormous quantities of dissolved carbon dioxide and methane.8 min / Medium Richat StructureConcentric rings in the Sahara form a geological landmark visible from orbit.7 min / Easy Cave of the CrystalsA chamber beneath Naica, Mexico, contains some of the largest natural gypsum crystals ever found.7 min / Easy Mammatus cloudPouch-like cloud formations hang beneath storm anvils and create an unusually textured sky.6 min / Easy Red spriteLarge electrical flashes can bloom high above thunderstorms for only milliseconds.7 min / Easy St. Elmo's fireA glowing plasma can gather around pointed objects during strong atmospheric electric fields.7 min / Easy Ice circleSlow currents can rotate sheets of river ice into near-perfect discs.6 min / Easy Tongue-eating louseA marine parasite replaces a fish's tongue and then occupies its place inside the mouth.7 min / Easy BarreleyeA deep-sea fish looks through a transparent shield with tubular eyes that can rotate toward prey.7 min / Easy SiphonophoraeColonies of specialized animals cooperate so closely that they appear to function as one organism.8 min / Medium