16373 Hard Trivia Questions
16373 public questions at this depth. How many can you answer?
Which dinosaur was the first to be scientifically named, in 1824?
Answer
Megalosaurus
What term describes the transfer of genetic material between different species, common in bacteria?
Answer
Horizontal gene transfer
Which deep-sea habitat where methane seeps support giant tube worms?
Answer
Cold seep
Which swamp in Cuba is the primary habitat of the Cuban crocodile?
Answer
Zapata Swamp
Which cave in New Zealand is famous for its glowworm population?
Answer
Waitomo Glowworm Caves
Which hydrothermal vent field in the Pacific was the first discovered, in 1977?
Answer
Galápagos Rift
What is the name of the deepest known hydrothermal vent field, located in the Cayman Trough?
Answer
Beebe Vent Field
Which cave in Texas is the summer home to the largest bat colony in the world?
Answer
Bracken Cave
Which fish spits jets of water to knock insects off overhanging plants?
Answer
Archerfish
Which bird species has the largest known vocal repertoire of over 1,100 song types?
Answer
brown thrasher
Which deep-sea fish uses a bioluminescent lure to attract prey?
Answer
anglerfish
Which crustacean has the fastest strike in the animal kingdom?
Answer
mantis shrimp
Which grouper species uses signals to recruit moray eels for cooperative hunting?
Answer
Roving coral grouper
Which frog carries its tadpoles in its vocal sacs?
Answer
Darwin's frog
Which marsupial uses a stick to extract insect larvae from tree bark?
Answer
Striped possum
Which New World monkey uses stone hammers and anvils to crack open nuts?
Answer
bearded capuchin
Which crow species is known for crafting hooks from twigs to extract insects?
Answer
New Caledonian crow
Which fish creates elaborate geometric sand circles on the seafloor to attract mates?
Answer
white-spotted pufferfish
Which viper species uses a tail tip that looks like a spider to attract prey?
Answer
Spider-tailed horned viper
Which beetle makes a clicking sound by snapping its body to escape predators?
Answer
Click beetle
Which bird uses bait to lure fish, making it a tool user?
Answer
Green heron
Which octopus species uses coconut halves as portable shelters?
Answer
Coconut octopus
What is the heaviest species of crustacean in the world?
Answer
American lobster
Which marine worm can reach lengths of over 50 meters?
Answer
Bootlace worm
What is the name of the symbiotic algae that lives inside coral?
Answer
Zooxanthellae
Which marine snail produces a purple dye historically used in royal robes?
Answer
Murex snail
What is the common name of the deepest known fish species?
Answer
Mariana snailfish
What is the common name for the giant tube worm found at hydrothermal vents?
Answer
Giant tube worm
What is the heaviest species of bony fish?
Answer
Giant sunfish (Mola alexandrini)
What is the scientific name of the immortal jellyfish?
Answer
Turritopsis dohrnii
What is the smallest species of seahorse?
Answer
Hippocampus satomiae
What is the maximum recorded depth of the Mariana Trench in meters?
Answer
10,994 meters
What wasp is known for hunting tarantulas and laying eggs on them?
Answer
Tarantula hawk