Eastern Bering Sea Shelf Survey - Post 4

June 15, 2017

This survey collects important information on the status and trends of commercially important fishes, crabs, and other species.

Eastern Bering Sea Shelf Survey

Bering Sea weather

Stellar Weather on First Leg

Despite what you may see on dramatic television shows about the Bering Sea, weather can often be very nice! During the first leg, it’s the best I’ve experienced in all my years coming out here. Winds have not exceeded 15 knots and seas and swell have remained below 3 feet the whole trip. I’ve watched some beautiful sunrises and sunsets and eerily calm foggy “grey-on-grey” days where the horizon blends into the sea.

Bering Sea weather

 

The Yellow Fellows

One thing that all 22 species of flatfish in the Bering Sea have in common ... they are all FLAT! Most flatfishes, like the ones in Pictures 1 to 4, have eyes on the right side of their head. The side with no eyes is called the “blind-side”. Only a couple of species in the Bering Sea have eyes on their left side. One species, the starry flounder, can be a righty (Picture 4) or a lefty (Picture 5). We are sampling at relatively shallow bottom depths in recent days and seeing all four species in every tow, along with another righty, the northern rock sole (not pictured). 

Three of the flatfish pictured have something else in common. They have bright yellow pigmentation. I call them “The Yellow Fellows”. Very striking and pretty, but not sure of the color’s purpose. It may have something to do with what they eat or it may play a role in their survival or natural history. Starry flounder have hard, scratchy scales and dramatic black and white bands on their fins that can be very startling when they kick-up off the bottom in a burst to swim away. It’s probably to scare off potential predators. I’ve observed it first-hand scuba diving many times and it always gives me a momentary scare.

Pictures 1-3.png

Yellowfin sole, Alaska plaice, and longhead dab.

Pictures 4-5.png

Starry flounder.

 

Other Interesting Things About The Yellow Fellows

The yellowfin sole is the most abundant flatfish on the Bering Sea shelf and supports the world’s largest commercial fishery for flatfish. Alaska plaice usually occupy the middle shelf where there is often seasonal sea ice during the winter and sub-zero bottom water temperatures during the summer (see last blog post on the cold pool), so the plaice is capable of synthesizing an antifreeze glycoprotein to prevent ice crystal formation in their blood. The longhead dab is the smallest of the three Yellow Fellows and is generally found closer to shore in shallow depths less than 100 feet. It is in the same genus as the yellowfin sole and has a poochy snout with fleshy lips that helps it excavate prey beneath the surface. 

Hope this little dab will do ya’ for now! (Sorry ... couldn’t resist).

EBS_NBS shelf_blog entry 3.png

Meet the Bloggers

Lauth-EBS.jpg

Bob Lauth

Bob Lauth has been a Fisheries Research Biologist for the NOAA Alaska Fisheries Science Center in Seattle for 26 years. Bob leads the Bering Sea Group, which is responsible for conducting summertime surveys of bottom fishes, crabs, and other bottom-dwelling creatures in the offshore marine waters of Alaska. Fascinated by Jacques Cousteau as a kid, Bob moved from Chicago to the 'ever-green' Seattle in 1980 to become a marine biologist without the slightest idea how to earn a living. After working three years in a dive store, teaching scuba diving, and doing marine field trips with school kids in the Puget Sound, Bob learned about the 'fishy side’ to marine biology. He enrolled at the University of Washington School of Fisheries, earned a Master’s degree, and then worked for the Inter-American Tropical Tuna Commission at a remote marine lab in Central America before returning to the northwest with his wife to raise a family and pursue his career in fisheries.

 

Jason-EBS.jpg

Jason Conner

Jason Conner is a fishery biologist who researches the groundfish populations of the Bering Sea. He began his career with NOAA Fisheries in Woods Hole, MA, at the Northeast Fisheries Science Center, helping to record data on whale and seal populations in the Atlantic. He also spent two years in Gloucester, MA, working on fisheries data reporting systems for the Northeast Regional Office. Jason grew up in Denver, CO, but he has had a passion for the ocean since he was two years old. In his free time, Jason enjoys acting in community theater, playing ice hockey, and diving (with and without SCUBA).