Marine Life questions
43 fact-checked questions — tap any to predict the answer, then read why.
- When a cold Arctic stream turns orange and acidic with dissolved metals after permafrost thaw, which fish hazard does that chemistry point to first?
- How do platypuses and Guiana dolphins use their electric sense to find hidden prey?
- Why does a nesting sea turtle release fluid from around its eyes while it is on the beach?
- Which organism produces the majority of Earth's oxygen?
- Why do sea anemones wave tentacles?
- Why do swordfish have long bills?
- Why do adult barnacles stay glued in one place for life?
- Why do lobsters molt their shells?
- Why do sea cucumbers eject organs?
- Why do remora fish attach themselves to sharks?
- Why can hagfish produce slime?
- Why might hunting cuttlefish send moving bands of color across their skin?
- How do a moray eel's throat jaws help it swallow prey?
- Why do sea otters use rocks when feeding on shellfish?
- Why do pufferfish inflate?
- Why do archerfish spit water?
- Why do flying fish leap out of water?
- Why do deep-sea fish survive pressure?
- Why does ocean water glow at night?
- Why do electric eels shock?
- Why do nautiluses float and sink?
- How do male seahorses carry a pregnancy if females produce the eggs?
- Why do corals bleach white?
- Why do dolphins use echolocation?
- Why do anglerfish have lights?
- Why do parrotfish make sand?
- Why do mantis shrimp punch so hard?
- Why do some jellyfish glow?
- Why can sharks sense electricity?
- What is the leading explanation for why male humpback whales sing complex songs?
- Why do octopuses change color?
- Why is coral classified as an animal rather than a plant?
- Why can starfish regrow their arms?
- Why do seahorses swim upright?
- Why do some deep-sea fish produce their own glow?
- Why do clownfish live in anemones?
- What natural cue is thought to help female sea turtles return to their natal region to nest?
- Why do some sharks swim constantly?
- Why do octopuses have three hearts?
- Why do crabs walk sideways?
- Why do jellyfish sting?
- How does a whale's muscle tissue help it stay underwater without breathing?
- Why do fish have scales?