California Campaign Director & Senior Scientist @Oceana. Ocean scientist working to protect fisheries, habitat, and wildlife for future generations.
Monterey, CA
Joined January 2012
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Geoff Shester retweeted
California wrapped up the most successful trial of pop-up fishing gear on the U.S. West Coast, proving this innovative gear to catch Dungeness crab is profitable for fishermen and safe for whales. 🦀🐋
Read more about the results 👉 bit.ly/46HZiRc
Geoff Shester retweeted
Pop-up fishing technology aims to keep whales safe while letting fishermen get back on the water says @KSBW. @oceana’s @GeoffShester says authorization of this gear by @CaliforniaDFW for spring 2026 would be a win-win for fishermen and #WhaleSafeOceans ksbw.com/article/whale-safe-…
Geoff Shester retweeted
"You could essentially be eliminating huge ecosystems without even understanding what was there in the first place," @Oceana’s @GeoffShester tells @PNS_News over impacts of deep sea mining ⛏️🪸 publicnewsservice.org/2025-0…
We can keep fishermen in business AND protect the resilience of our ocean ecosystems by using smarter, more selective fishing methods #WorldOceansDay
A marine sanctuary off California's southern coast has helped foster a natural mecca for marine life. But the haven — and much of the rest of the ocean — is threatened by commercial fishing nets. trib.al/Ov3EE2j
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Geoff Shester retweeted
Help protect California wildlife this #BiodiversityDay!🪸 🦈
California's waters are home to an incredible array of wildlife, but these habitats & animals are threatened by indiscriminate fishing gears. Add your name to protect #biodiversity here today: oceana.ly/3KaBWXV
Geoff Shester retweeted
Our oceans need #YesOnAB2220. Calif voters banned use of the type of monofilament net in nearshore waters seen entangled around this recently spotted gray whale. Yet, the gear is still allowed offshore SoCal where it can have consequences like this.
A gray whale seen entangled in monofilament gillnet fishing gear off Laguna Beach may still be trailing the heavy fishing gear. @Oceana urges #caleg to pass #YesOnAB2220 by @asmstevebennett to address heartbreaking entanglements like this one. Read more: bit.ly/43PcobN
Geoff Shester retweeted
New funding will expand opportunities for California Dungeness crab fishermen using ropeless gear while protecting whales and sea turtles from entanglement. @oceana commends participating fishermen and @OPC_California for supporting this investment 👏🐳🦀bit.ly/3uYUciI
Geoff Shester retweeted
Thank you @asmstevebennett for championing #YesOnAB2220 to protect California’s ocean life from the threat of entanglement in set gillnets. These nets are 20 football fields long and threaten ocean biodiversity. Read more bit.ly/3UB8MYo
ALT A California bat ray swimming through a giant kelp forest off Santa Barbara Island, California. 📷David Fleetham/Alamy Stock Photo
ALT California gray whale calf 📷 RobertHarding/Alamy Stock Photo
ALT Two giant sea bass swim in a circle as part of a courtship mating aggregation. 📷Phillip Colla/Oceanlight.com
ALT great white shark 📷 Jim Agronick/Shutterstock
Geoff Shester retweeted
It’s official: #SharkWeek has begun, and these animals need your help. Add your name today to #KeepCAOceansThriving 🦈
Sharks may be top predators off the California coast, but that doesn’t mean they’re safe. Set gillnets entangle & kill sharks, and this needs to end NOW! Tell @CaliforniaDFW and @GavinNewsom to act for sharks and #KeepCABiodiversityThriving: bit.ly/46TlLrW 🦈
Geoff Shester retweeted
CALIFORNIANS: Deadly set gillnets pose a constant threat to whales, sharks, sea lions, and other iconic California #ocean animals. 🦈 🐋
Don’t let wildlife continue to suffer! Add your name to tell @CaliforniaDFW to #KeepCAOceansThriving: bit.ly/40mPqFG
Geoff Shester retweeted
WATCH: California ocean biodiversity at risk. Mile-long set gillnets targeting California halibut & white seabass entangle, injure, & kill more than 125 different species of ocean animals. @CaliforniaDFW we need you to address this needless waste to #KeepCAOceansThriving
Geoff Shester retweeted
Great coverage by @suzannerpotter on a threat to California's ocean biodiversity. New @oceana report finds mile-long gillnets fixed to the seafloor to catch California halibut & white seabass entangle more than 125 species of marine life. #KeepCAOceansThriving
WATCH: California ocean biodiversity at risk. Mile-long set gillnets targeting California halibut & white seabass entangle, injure, & kill more than 125 different species of ocean animals. #KeepCAOceansThriving vimeo.com/818383740
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Geoff Shester retweeted
California ocean biodiversity is at risk according to a new report by @oceana and @SeaTurtles_org. Mile-long set gillnets meant to catch California halibut and white seabass off SoCal are catching more than 125 different species of ocean animals. Read more bit.ly/43BTNPQ
ALT A California bat ray glides through a kelp forest © David Fleetham/Alamy Stock Photo
Geoff Shester retweeted
“When whales arrive off California in large numbers it’s heartening to know they will hopefully be able to find the food they need without the risk of becoming entangled in a fishing line,” says @Oceana's @GeoffShester Thank you @CaliforniaDFW bit.ly/40MNBSL
ALT humpback whale in Monterey Bay ©Chase Dekker/Shutterstock
Geoff Shester retweeted
Thank you @WadeCrowfoot @CaliforniaDFW and @OPC_California for your thorough efforts in implementing this collaborative partnership to protect ocean wildlife and ensure sustainable fisheries
Geoff Shester retweeted
Thank you @LuzRivas @GavinNewsom @EleniForCA @Surfrider_CA @MontereyAq for leading the charge to #DefendTheDeep. Vibrant and diverse living seafloor habitats like coral gardens, sponge beds, & rocky reefs will be safeguarded from destructive seabed mining bit.ly/3Bvb1B3
#DeepSeaMining endangers the health of California’s marine environment and our fishery and tourism industries. @ilike_mike and @SenToniAtkins please support #AB1832 the California Seabed Mining Prevention Act. #DefendTheDeep #CAleg
