A 2002 photo taken during the second leg of the Aleutian Islands survey shows a snailfish. The Alaska Fisheries Science Center, part of the National Oceanic and Atmospheric Administration, has helped name more than a dozen new species over the last decade.

A 2002 photo taken during the second leg of the Aleutian Islands survey shows a snailfish. The Alaska Fisheries Science Center, part of the National Oceanic and Atmospheric Administration, has helped name more than a dozen new species over the last decade.

Surveys off Alaska lead to new types of soft-bodied fish

ANCHORAGE — Federal biologist Jay Orr never knows what’s going to come up in nets lowered to the ocean floor off Alaska’s remote Aleutian Islands, which separate the Bering Sea from the rest of the Pacific Ocean. Sometimes it’s stuff he has to name.

The National Oceanic and Atmospheric Administration biologist is part of a group that uses trawl nets to survey commercially important fish species such as cod in waters off Alaska. Sometimes those nets come up with things no one has seen before.

With co-authors, Orr has discovered 14 kinds of new snailfish, a creature that can be found in tide pools but also in the deepest parts of the ocean. A dozen more new snailfish are waiting to be named. Additional species are likely to be found as scientists expand their time investigating areas such as the Bering Sea Slope, in water 800 to 5,200 feet deep, or the 25,663-foot deep Aleutian Trench.

“I suspect we are just scraping the top of the distributions of some of these deep-water groups,” Orr said from his office in Seattle.

Orr and his colleagues measure the abundance of rockfish, flatfish and other “bottom fish” for the Alaska Fisheries Science Center, the research arm of the NOAA’s National Marine Fisheries Service. The center studies marine resources off Alaska and parts of the West Coast.

Five boats with six researchers each surveyed Alaska waters in late June. The teams trawl on the Bering Shelf every summer and in either Aleutian waters or the Gulf of Alaska every other year.

Their findings on fish abundance are fed into models for managing fish populations.

The scientists put down a 131-foot trawl net that captures whatever is along the ocean bottom. A ton of fish is a standard sample. Along with fish, they get clues to the seafloor habitat. Sponges, for example, indicate a hard seafloor, or substrate.

Fifteen years ago, research biologist Michael Martin suggested a small modification: a net just 2 to 3 feet wide at the front of the trawl net.

“We realized we didn’t have a really good picture of the substrate that we were trawling over, and we figured we were missing some things in the big meshes that the larger net had,” Orr said. “So one of the other guys here decided to put this little net on, mainly as a means to see what the substrate looked like.”

On one of the first hauls, the small net returned with a variety of small, soft-bodied fish, including snailfish, that likely would have fallen out or gotten mashed in the main net. Orr took a look and knew they had found something different.

As someone who studies fish, “I sort of knew what I was looking for and what was known out there,” he said. “The first ones that came up, I saw them right away and said, ‘We don’t know what these are. These haven’t been named.’”

Snailfish have no scales, feel gelatinous and look like fat tadpoles. Aristotle described a Mediteranean variety found in ancient Greece as “sea slugs.”

Many fish have pelvic fins on their bellies, just behind the gills. Most snailfish species, instead of pelvic fins, have a sucking disc that they use to cling to rocks.

Orr identified some new varieties that did not have a sucking disc. Another had a hardened bone in its head. Another had a projecting lower jaw. Others varied by shape, color or body parts, such as vertebrae.

“Nearly all of them have genetic characters that distinguish them, too,” Orr said.

He has wide latitude for giving new species both common and Latin names. A red, white and black snailfish with a big, bulbous nose struck him as funny-looking. He gave it the common name of “comic snailfish” and the Latin name Careproctus comus, after Comus, the god of comedy in Greek mythology.

Snailfish made headlines in 2014 when researchers recorded them swimming nearly 27,000 feet, or more than 4 miles, below the surface in the Marianas Trench, making them the deepest-dwelling vertebrate on the planet. The Marianas Trench is about 200 miles southwest of the Pacific island of Guam and is known as the deepest part of the world’s oceans.

A critical part of the work is on the species his agency actively manages. Orr helped distinguish the northern rock sole, which spawns and grows differently than other rock sole. Fishing at the wrong time could disrupt a population important to the seafood market.

“Ultimately we’re managing an ecosystem,” Orr said. “It’s really important to know what each of the elements are.”

Related stories:

Off the Trails: Looking at intertidal algae

Climbing season comes to a close on Denali

A ghost town on the Tanana River

This July 31, 2010 photo shows James Orr, research fishery biologist in Norton Sound. Federal scientists sampling commercial fish species off Alaska's Aleutian Islands keep finding new species. The Alaska Fisheries Science Center, part of the National Oceanic and Atmospheric Administration, has helped name more than a dozen new species over the last decade.

This July 31, 2010 photo shows James Orr, research fishery biologist in Norton Sound. Federal scientists sampling commercial fish species off Alaska’s Aleutian Islands keep finding new species. The Alaska Fisheries Science Center, part of the National Oceanic and Atmospheric Administration, has helped name more than a dozen new species over the last decade.

More in Neighbors

(Juneau Empire file photo)
Living and Growing: Twisting Scripture to suit themselves

Ever wonder why so many different people say so many different things… Continue reading

Tortilla beef casserole ready to serve. (Photo by Patty Schied)
Cooking for Pleasure: Tortilla beef casserole for Cinco de Maya

When my kids were growing up their appetites were insatiable. Every night… Continue reading

Sister Sadria Akina, Elder Tanner Christensen and Elder Bronson Forsberg, all missionaries with the Church of Jesus Christ of Latter Day Saints, collect litter on April 22, 2023, in the Lemon Creek area. It was their first time partaking in Juneau’s communitywide cleanup. (Ben Hohenstatt / Juneau Empire file photo)
Neighbors briefs

Annual Litter Free citywide cleanup on Saturday Saturday is set for Litter… Continue reading

The Ward Lake Recreation Area in the Tongass National Forest. (U.S. Forest Service photo)
Neighbors: Public input sought as Tongass begins revising 25-year-old forest plan

Initial phase focuses on listening, informing, and gathering feedback.

An aging outhouse on the pier extending out from the fire station that’s purportedly the only public toilet in Tenakee Springs in August of 2022. (Mark Sabbatini / Juneau Empire file photo)
Gimme a Smile: Is it artificial intelligence or just automatic?

Our nation is obsessed with AI these days. Artificial intelligence is writing… Continue reading

Adam Bauer of the Local Spiritual Assembly of Bahá’ís of Juneau.
Living and Growing: Embracing progress while honoring Our roots

I would like to take a moment to acknowledge that we are… Continue reading

Visitors look at an art exhibit by Eric and Pam Bealer at Alaska Robotics that is on display until Sunday. (Photo courtesy of the Sitka Conservation Society)
Neighbors briefs

Art show fundraiser features works from Alaska Folk Festival The Sitka Conservation… Continue reading

U.S. Sen. Lisa Murkowski meets with Thunder Mountain High School senior Elizabeth Djajalie in March in Washington, D.C., when Djajalie was one of two Alaskans chosen as delegates for the Senate Youth Program. (Photo courtesy U.S. Sen. Lisa Murkowski’s office)
Neighbors: Juneau student among four National Honor Society Scholarship Award winners

TMHS senior Elizabeth Djajalie selected from among nearly 17,000 applicants.

The 2024 Alaska Junior Duck Stamp Contest winning painting of an American Wigeon titled “Perusing in the Pond” by Jade Hicks, a student at Thunder Mountain High School. (Photo courtesy of the U.S. Fish and Wildlife Service)
THMS student Jade Hicks wins 2024 Alaska Junior Duck Stamp Contest

Jade Hicks, 18, a student at Thunder Mountain High School, took top… Continue reading