[CINC] Fwd: PS to Shark Colloquium/ Carpinteria

[paul jr petrich]

Begin forwarded message:

> From: paul jr petrich <ppetrich39 at me.com>
> Subject: PS to Shark Colloquium/ Carpinteria
> Date: January 13, 2013 10:38:09 AM PST
> To: channel_islands_ naturalist_corps <channel_islands_naturalist_corps at rain.org>
> 
> Ocean People,
>   Adding to Kevin and Shirley's observations: Tara Brown and I attended as well. Lucky thing that I stopped by early p.m. to pick up our tickets. Tarn, Shirley: I had two extra as 2 friends did not show. Wish we saw you and yourMom in the long line! Other pertinent facts on sharks below:
> 2012 worldwide 9 fatal shark attacks ( 88 total attacks ) vs 6 non shark California only surfer fatalities due to accidents; vs 50 fatalities on land due to dog attacks(USA). 
> During 1900-2000 their were 108 reported shark attacks along entire N American west coast / Since then 72 -almost universally in pinniped rookery regions.
> Local recent So Cal White Shark sightings along sandy beach areas are juveniles attracted by congregating Grunion during Grunion runs spring through summer.
> California 8 attacks since 2000: 48% surfers plus 30% on other floating devices ( kayaks, boogie boards ). Most were"inquisitive attacks" on floating the devises, too!
> Smart recommendations: Never float, dive or swim in pinniped dense areas, recent shark sighting areas, or in "catch-bloodied" patches of water.
> Migratory sharks have own GPS: Minerals within their inner ear act as magnetized GPS system. Also, Great Whites will "Spy Hop" to use eyesight on surface surroundings.
> White Shark populations are just beginning to rebound after disasterous overkill: Not so with decreased populations of most shark species-still declining.
> Great White males sexually mature at 9-10 yrs. / females at 14-16 yrs! Slow reproduction.
> Loss of sharks as a top predator in ocean ecosystems devastating to some fisheries as rays, etc. overwhelm market species not targeted by sharks (whereas rays etc were ).
> Historically, some shark species local to our So Cal Bight: Leopard; Gil; Swell; Hammerhead; Goblin; Soup-fin; Thresher; Mako; and Blue. 
> I remember in 1950s Blue Sharks were every where in our channels and around the Channel Islands-and Ralph Collier confirmed the following: In a 1968 research project he set a 200 baited hook long line in a Catalina Island cove specifically to study BlueSharks, and caught 196 on it in 4 hours. In 1998 he returned to the same cove, set the same 200 hooks, and caught Blues in 24 hours!   
> Great program which is to be repeated elsewhere along our So Cal Bight.  PaulPetrich

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