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Across 4. condition which causes dissolved nitrogen to form bubbles in the blood 5. method of analizing sound waves for the purpose of locating objects 6. largest known animal 7. order to which dolphins, porpoises, and whales belong 8. rough patches of skin at the location of hair 14. docile but deadly reptile 17. birds that swim under water but can not fly in the air 18. lives on land but feeds in water 20. structure on top of birds' beak to rid excess salt 22. order to which seals and sea lions belong 23. shell of turtle 24. swimming toward the shore until the body is washed up onto the beach 26. procedure of oiling feathers 27. in cetaceans forehead aiding in echolocation 28. order to which manatees, dugongs and sea cows belong

Down 1. pinniped that has an external ear 2. allows the proper time of birth 3. structure of many animals which will help maintain homeostasis by removing excess salt 4. a leap out of the water to crash down on the surface 9. rows of comb-like plates used to filter plankton 10. class of birds 11. time of development 12. feet that are webbed between all four toes 13. a term often used incorrectly by evolutionist to show changes inorganisms 15. seasonal movement for the purposes of feeding and reproduction 16. Class to which lizards, snakes, turtles, and alligators belong 19. tails of animals in the Cetacea order 21. an activity done by an organism in its natural habitat 24. fountain of water resulting from the condensation of the warm air coming from lungs 25. excrement