1. Marine Mammals

10. Figure 9.09b

11. California Sea Lion

12. Harems Stellar Sea Lions in “A” are the largest of the eared seals with males nearly 1 ton! In “B” a harem of California Sea Lions on Santa Barbara Island in S.Cal. The larger Elephant Seals are in the top of the picture.

13. “ I am the Walrus”

16. Figure 9.13

18. Cetacea

23. Figure 9.19b

24. Cetaceans swim with strong tail and flukes Key facts (differ between species): average life span: 10 to 50 years gestation: 10 to 17 months calving: can occur every 2 to 5 years, one calf at a time size: "typical" dolphins are about two m long and weigh 100 kg

30. Why are dolphins affected by tuna fisheries? Yellow-fin tuna often school beneath large herds of spotted dolphins in the eastern Pacific Ocean. They both are feeding on surface-dwelling squids, mackerel and flying fish. When fishing nets are set beneath the dolphins to surround the tuna, dolphins and other by-catch also get tangled in the nets and die. Public pressure surrounding this controversial issue has prompted a 97 percent reduction of dolphin by-catch in the last seven years. Dolphins are only affected by the yellow-fin tuna fishery. Albacore tuna do not associate with dolphins.

31. Net tough on dolphins! Since 1990 the 3 top tuna packers agreed to not buy tuna from dolphin killing suppliers This net has now been changed so that dolphins are not harmed by US fisherman.

32. Drift net tough on dolphins!

33. Two other fishing style “nets”

34. The Mermaid Cares Chicken of the Sea ® implemented "The Mermaid Cares" dolphin-safe policy in April 1990 and is among the industry's leaders in implementing programs to prevent accidental dolphin mortality. All tuna purchased, processed and sold by Chicken of the Sea is dolphin-safe... period! There is no flexibility in our policy. All the suppliers of our raw tuna and all suppliers of finished goods must be 100% dolphin-safe. None of the tuna we purchase is caught in association with dolphins. Our commitment to help solve the dolphin mortality problem has been long-standing, and we at Chicken of the Sea can truly say, "The Mermaid Cares".

35. Dolphin Echolocation

36. Blue Whale Anatomy

37. A dolphin giving “live” birth Viviparous = Live Birth

38. "Walking Dinosaur" fossil Found in 1994 in Pakistan from around 49 million years ago – It’s a whale of a tale!

39. Figure 9.31

40. Table 9.02

43. Which whales eat only large zooplankton? Which whale eats invertebrates near the ocean floor? Which whale eats large squid? Which whales eat pelagic fishes?

44. Figure 9.27a Beluga Whale A white Arctic whale with a conspicuous melon to focus the outgoing sound waves.

45. Whale Behavior Sperm whales surrounding an injured member of a pod

46. Whale Behavior Spying Behavior of Killer Whales

47. Dolphin Behavior Dolphins seen carrying an injured Dolphin to the surface to breathe.