https://padlet.com/nat_tracy2/8l4swblowyuw WIS4934 en-us 2020-02-27 17:21:23 UTC 2020-02-27 18:39:54 UTC hello@padlet.com https://padlet.net/icons/png/1f98b.png nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451529444 There is an estimated 50,000 orcas globally.They are found in every ocean, making them the most widely distributed cetacean. They have also historically inhabited every ocean, but now the populations are more sparse. ]]> 2020-02-27 17:25:42 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451529444 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451532294 They feed on sea birds, squid, octopuses, sharks, sting rays, fish, sea lions, and sea turtles. They are apex predators. ]]> 2020-02-27 17:29:21 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451532294 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451534050 There is not sufficient data for many of the orca populations, but the Southern Resident population is considered endangered and the AT1 Transient population is considered depleted, as they were heavily affected by the Exxon Valdez spill. There are 7 left in this sub-population.  ]]> 2020-02-27 17:31:27 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451534050 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451535549 They live in pods ranging from a few individuals to 20. Larger groups may temporarily form during mating season. They have coordinated hunting strategies. Resident orcas are matrilineal, with the oldest female leading the group. ]]> 2020-02-27 17:33:23 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451535549 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451538260 As apex predators, they exercise top-down control on the food chain. They are the biggest reason for mortality of sea lions. Without them, populations of their prey would soar. They also host endo and ectoparasites. ]]> 2020-02-27 17:36:50 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451538260 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451541680 People have hated and hunted these animals for a long time. Recently, attitudes have been shifting as people value their intelligence and their role in the ecosystem. Some people pay lots of money to see these animals in captivity while others believe that their role is in the ocean, where their impact will be felt. ]]> 2020-02-27 17:41:18 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451541680 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451546558 Attitudes, especially recently, have changed as well as the portrayal of the animal.]]> 2020-02-27 17:48:32 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451546558 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451548267 More sympathy is growing for captive orcas]]> 2020-02-27 17:51:00 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451548267 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451549996 This documentary contributed to Sea World's elimination of their breeding program in 3 years. ]]> 2020-02-27 17:53:08 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451549996 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451552962 Legislation such as the Species at Risk Act protects orcas. There are also efforts to gather scientific data about the species as well as cooperate with other countries such as the U.S. to protect orcas in all waters. ]]> 2020-02-27 17:56:51 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451552962 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451558769 NOAA works help orcas by increasing prey availability, improving habitat quality, and conducting research on the orcas. ]]> 2020-02-27 18:03:25 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451558769 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451561100 Orcas hunting]]> 2020-02-27 18:06:20 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451561100 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451562006 Orca population distribution]]> 2020-02-27 18:07:32 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451562006 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451563609 About a decade ago a SeaWorld trainer was killed by an orca. A lot of people viewed these animals as dangerous. ]]> 2020-02-27 18:09:33 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451563609 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451564922 While SeaWorld has ended their breeding program, China has begun to pick up this practice.]]> 2020-02-27 18:11:20 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451564922 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451570285 The Navy will stop polluting waters off the coast of Washington, which has endangered orcas.]]> 2020-02-27 18:18:14 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451570285 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451571852 Breeding orcas at SeaWorld (before they stopped)]]> 2020-02-27 18:20:16 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451571852 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451575409 Our current practices have to be evaluated to determine what actions to protect the orcas we must prioritize. ]]> 2020-02-27 18:24:45 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451575409 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451577344 PCBs, or polychlorinated biphenyls, are industrial products or chemicals.]]> 2020-02-27 18:27:07 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451577344 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451577549 The effects PCBs have on large animals may not be as obvious, but we are finding that they accumulate in the blubber, killing orcas and decreasing the ability of the populations to recover.]]> 2020-02-27 18:27:24 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451577549 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451579476 This shows how PCBs affects orcas and other marine animals. ]]> 2020-02-27 18:29:47 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451579476 nat_tracy2 https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451582819 This video describes the causes and effects of PCBs in killer whales.]]> 2020-02-27 18:34:15 UTC https://padlet.com/nat_tracy2/8l4swblowyuw/wish/451582819