European green crabs continue to creep inward in the Salish Sea as local resource managers remain on the lookout.
Last week, staff with the Washington Department of Fish and Wildlife confirmed one of Washington Sea Grant’s 55 Crab Team early detection sites found a male green crab in Nick’s Lagoon by Seabeck in Kitsap County.
State staffers report this is the first detection of green crabs in the Hood Canal, and furthest south confirmed in the Salish Sea.
The finding follows Gov. Jay Inslee’s emergency proclamation in January about green crab regarding increases in their populations along the ocean coastline, and in the Lummi Nation’s Sea Pond west of Bellingham — where more than 70,000 green crabs were captured.
Resource managers say the invasive species threatens native shellfish, eelgrass and estuary habitats across the globe.
Larvae can travel as far as of 100 kilometers, state officials said, and a female can release up to half-a-million larvae per brood at least once a year.
With the Kitsap County crab, Fish and Wildlife staff plan to conduct intensive trapping to determine the amount of crab and attempt to eradicate them there.
This follows statewide efforts to develop cooperative agreements with local entities along Western Washington’s waterways, state officials said.
Neil Harrington, environmental biologist for the Jamestown S’Klallam Tribe, said in a presentation on May 18 to the Olympic Peninsula Audubon Society, that he hopes to work with Department of Fish and Wildlife staff to place upwards of 1,000 crab traps this year.
So far, he and a team with the tribe have placed 262 traps in March and April and caught one male green crab by the Tribal Center.
“If that number holds, I’ll be happy with that,” he said.
Last year, his team and Fish and Wildlife officials caught 16 green crabs in 758 traps.
Captures in Sequim Bay have been sporadic with one crab first captured in 2017 with 372 traps placed, and two more caught in 2019 with 389 traps set.
Harrington said they’ve placed traps in Washington Harbor and Travis Spit but have not caught any green crabs there.
“We’re hoping they don’t get settled here,” he said.
At the Washington Maritime National Wildlife Refuge in Dungeness, Harrington told him that staff there have caught one male green crab in its base lagoon with 90 traps placed so far since April 1.
Green crabs were first detected in Dungeness in 2017 after years of monitoring with 96 green crabs caught.
Numbers there have remained relatively low going as low as three captures in 2020 with 1,883 traps and up slightly last year to eight from 839 traps set.
Lorenz Sollmann, the refuge’s deputy project leader, previously said with the lower totals two years in a row they’d look to scale back in some of their efforts.
In May 2021, resource managers report Fish and Wildlife staff caught two green crabs Bishop’s Point on Indian Island Naval Base May, but no others were found at other sites.
In Neah Bay, resource managers for the Makah Fisheries Management and Makah Tribe reported capturing 1,460 crabs in the Tsoo-Yess River, Wa’atch River and near Tsoo-Yess Beach. It was their most ever captured since trapping began in 2017.
State funding was put in place to support areas like Neah Bay with high green crab populations.
Capture totals for Jefferson County and Neah Bay so far this year were unavailable by press time.
Looking ahead, Harrington compares green crab to scotch broom in that it may be around but not become the dominant species.
“It may be an ongoing maintenance thing,” he said.
Resource managers say if you find a green crab, take a picture of it and report as soon as possible to firstname.lastname@example.org.
State officials ask the public not to keep or kill suspected green crabs because they can be mistaken for native crabs.