| http://www.w3.org/ns/prov#value | - The saddle patch, the white marking behind the dorsal fin, acts like a fingerprint and allows researchers (and whale watchers!) to keep track of their information, including ID numbers (and nicknames), ages, and family relationships.The three pods that make up the Southern Resident population mate amongst each other and do not interbreed with the Northern Residents.Northern Resident Killer Whale s
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