Classification of Marine Animals

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Across
  1. 2. Two-part naming system using genus and species
  2. 4. Giant tube ___ live near hydrothermal vents
  3. 6. The study of evolutionary relationships
  4. 8. The second part of a scientific name
  5. 9. The first part of a scientific name
  6. 11. Marine adaptation that controls salt balance
  7. 12. Whales that use sound to locate prey
  8. 14. Animals with segmented bodies and exoskeletons
  9. 18. Hard reef-builders with symbiotic algae
  10. 19. Classification helps protect these animals from extinction
  11. 21. Group with stinging cells called cnidocytes
  12. 22. Largest group of marine vertebrates
  13. 25. Spiny-skinned animals with tube feet
  14. 27. Marine birds that cannot fly but are excellent swimmers
  15. 28. Light produced by deep-sea organisms
  16. 29. Broadest level of classification
Down
  1. 1. Tiny organisms that produce oxygen in the ocean
  2. 3. Organisms at hydrothermal vents that use chemicals for energy
  3. 5. Organ in bony fish that helps control buoyancy
  4. 7. Structures that allow fish to breathe underwater
  5. 10. Marine reptiles that migrate long distances to nest
  6. 13. Clams and oysters belong to this group
  7. 15. Group of fish with cartilage skeletons like sharks and rays
  8. 16. Fish with skeletons made of bone, such as tuna and clownfish
  9. 17. Warm-blooded ocean animals that nurse young
  10. 20. The science of naming and grouping organisms
  11. 23. Octopuses and squids belong to this group
  12. 24. Fatty tissue layer in marine mammals for insulation
  13. 26. Simple filter-feeding animals with pores