Wow! I'd love to see some tunas swimming! About your questions, my understanding WAS that on the west coast, the A-I pods are based in California and Oregon and I ASSUMED that the pod designations continued with M, etc. through Canada and into Alaska. (edited: I've since checked, and I had it backwards... the A-I pod designations begin in Alaska and go south.)
Here's some information about the pod designations & identifications from a website which I've since misplaced:
Quote:When the scientists began the identification process they started with the Northern Resident pods who live in Northern BC and SE Alaska, which are labeled A, B, C, etc. By the time they got around to the southern residents they were up to J in the alphabet.) The residents are all named and numbered and can be individually identified using photos of their saddle patch (grayish markings on each side, just behind their dorsal fin). Each saddle patch (left & right) is always different than any other whales' patch - like a fingerprint. Together with dorsal fin markings, nicks, and notches, each whale can be identified easily by researchers.
T-designations are given to the "transient" whale populations.
As far as I know, the local pods are very cohesive though they are often broken up into sub-pods, which are most like families. Researchers, both professional and amateur, know them by sight and keep close tabs on individuals. Here, for example, is a recent list of pod members:
______________________________________________________
Puget Sound Orca Sub-pod Relationships and Year of Birth -
updated July 2003
---------------------------------------------------------------------------
J pod - 22 Whales
J2 Granny * 1911 (Piffka note -- I can't believe this orca is this old!)
J1 Ruffles 1951 (possible brother or son of Granny)
J14 Samish 1974 (likely grand daughter of Granny)
J30 Riptide 1995 (son of Samish)
J37 Hy'Shqa 2000 (offspring of Samish)
J8 Speiden* 1933
J19 Shachi 1979 (possible grand daughter of Speiden)
J11 Blossom 1972 (possible grand daughter of Speiden)
J27 Blackberry 1991 (son of Blossom)
J31 Tsuchi 1995 (daughter of Blossom)
J39 2003 (offspring of Blossom)
J22 Oreo* 1985
J32 Rhapsody 1996 (niece of Oreo)
J34 Doublestuf 1998 (son of Oreo)
J38 2002 (offspring of Oreo)
J17 Princess Angeline* 1977 (possible cousin of Oreo)
J28 Polaris 1993 (daughter of Princess Angeline)
J35 Tahlequah 1998 (daughter of Princess Angeline)
J16 Slick* 1972
J26 Mike 1991 (son of Slick)
J33 Keet 1996 (son of Slick)
J36 Alki 1999 (offspring of Slick)
--------------------------------------------------------------------------------
K pod - 19 Whales
K12 Sequim* 1972
K22 Sekiu 1987 (daughter of Sequim)
K33 2000 (offspring of Sekiu)
K28 Raven 1994 (daughter of Sequim)
K31 Tatoosh 1999 (son of Sequim)
K7 Lummi* 1910
K11 Georgia 1933 (possible daughter of Lummi)
K13 Skagit 1972 (daughter of Georgia)
K20 Spock 1986 (son of Skagit)
K25 Scoter 1991 (son of Skagit)
K27 Deadhead 1994 (daughter of Skagit)
K34 2001 (offspring of Skagit)
K18 Kiska* 1948
K21 Cappucino 1986 (son of Kiska)
K40 Raggedy 1963 (likely daughter of Kiska)
K14 Lea* 1977
K26 Lobo 1993 (offspring of Lea)
K16 Opus 1985 (sister of Lea)
K35 2000 (offspring of Opus)
--------------------------------------------------------------------------------
L pod - 43 Whales
L32 Olympia* 1955
L87 Onyx 1992 (son of Olympia)
L85 Mystery 1991 (possible nephew of Olympia)
L22 Spirit 1971 (likely daughter of Olympia)
L79 Skana 1989 (son of Spirit)
L89 Solstice 1993 (son of Spirit)
L25 Ocean Sun* 1928 (last surviving member of her family group; often seen with L12's)
L12 Alexis* 1933
L41 Mega 1977 (possible grand son of Alexis)
L77 Matia 1987 (sister of Mega)
L94 Calypso 1995 (sibling of Mega)
L2 Grace* 1960
L67 Splash 1985 (daughter of Grace)
L98 Luna 1999 (son of Splash - currently living alone in Nootka Sound, BC)
L101 2002 (offspring of Splash)
L78 Gaia 1989 (son of Grace)
L88 Wavewalker 1993 (son of Grace)
L26 Baba* 1956
L92 Crewser 1995 (grand son of Baba)
L71 Hugo 1986 (son of Baba)
L90 Ballena 1993 (daughter of Baba)
L57 Faith 1977 (last surviving member of his family group; often seen with L7's)
L7 Canuck* 1961
L53 Lulu 1977 (daughter of Canuck)
L43 Jelly Roll* 1972 (possible sister of Canuck)
L72 Racer 1986 (daughter of Jelly Roll)
L95 Nigel 1996 (son of Jelly Roll)
L27 Ophelia* 1965
L55 Nugget 1977 (possible sister of Ophelia)
L82 Kasatka 1990 (daughter of Nugget)
L102 2003 offspring of Nugget
L86 Surprise 1991 (sister of Nugget)
L21 Ankh* 1950
L47 Marina 1974 (daughter of Ankh)
L83 Moonlight 1990 (daughter of Marina)
L91 Muncher 1995 (offspring of Marina)
L3 Oriana* 1950 (Missing 2003)
L74 Saanich 1986 (son of Oriana)
L84 Nyssa 1990 (grand son of Oriana)
L5 Tanya* 1964 (possible sister of Oriana)
L58 Sparky 1980 (son of Tanya) Missing 2003
L73 Flash 1986 (son of Tanya)
L54 Ino* 1977
L100 2001 (offspring of Ino)
--------------------------------------------------------------------------------
* Sub group leaders
New calves: J38 (Oreo's calf)
J39 (Blossom's calf)
K35 (Opus' calf)
L101 (Splash's calf)