arthropods marine biology

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Across
  1. 3. (8) – The hard upper shell that covers the cephalothorax (head and thorax) of crabs and lobsters.
  2. 7. (6) – Stalk-eyed, swimming crustacean with an elongated body, often found in both shallow reefs and the deep sea.
  3. 11. (5) – Tiny, shrimp-like crustaceans that form the massive base of the Antarctic food web, eaten by baleen whales.
  4. 12. (8) – Small, laterally compressed (flattened sideways) crustaceans often found hiding in seaweed or sand.
  5. 16. (11) – The external skeleton that supports and protects an arthropod's body.
  6. 18. or COPEPOD (7) – Microscopic, incredibly abundant zooplankton that serve as a vital food source for young fish.
  7. 20. (6) – A type of shrimp (___ shrimp) famous for having one of the fastest punches in the animal kingdom, capable of breaking glass.
  8. 21. (11) – The scientific name for a sea spider, a marine arthropod that is almost entirely legs, with organs housed inside its limbs.
Down
  1. 1. (8) – A sessile (non-moving) crustacean that cements itself head-first to rocks, ships, or whales and filters food with its feathery legs.
  2. 2. or ZOEA (4) – The free-swimming, planktonic larval stage of most crabs and shrimp.
  3. 4. (9) – Jointed structures (like legs, antennae, and mouthparts) that give arthropods their phylum name.
  4. 5. (8) – Also known as rock lobsters or spiny lobsters in marine environments, they lack the large front claws of their cold-water cousins.
  5. 6. (6) – A marine scavenger related to pillbugs; the "giant" deep-sea version can grow up to 14 inches long.
  6. 8. Chelicerates (Arachnid Relatives)
  7. 9. (4) – The process where an arthropod sheds its old, rigid exoskeleton so its body can grow larger.
  8. 10. (4) – A decapod crustacean known for its thick exoskeleton, two pincers, and distinct sideways walk.
  9. 13. (9) – A "living fossil" (___ crab) that is actually more closely related to spiders and scorpions than true crabs.
  10. 14. (7) – The biological order of crustaceans that literally translates to "ten-footed," including crabs, lobsters, and shrimp.
  11. 15. (7) – A large, bottom-dwelling marine crustacean with a powerful tail and, in some species, massive crushing claws.
  12. 17. (5) – Respiratory organs located under the carapace that marine arthropods use to extract oxygen from seawater.
  13. 19. & Biology Terms
  14. 22. (6) – The tough, fibrous carbohydrate material that makes up the exoskeleton of marine arthropods.