Drones, Plankton, and Orcas: Day Four on the Oceanus

Posted on September 27, 2018 by Cait Goodwin

By Sara Pursel
Science Teacher at Taft High School in Lincoln City, OR

This post is part of a series about the 2018 STEM research cruise taking place this week on board the R/V Oceanus. Other posts in this series include a report from PI Tracy Crews on Day One and Day Three, and a post from high school student Alishia Keller from Day Two.

Drone footage captures data about whales

Wednesday was our fourth and final day conducting the research portion of the Oceanus STEM cruise. We began in the morning off the coast of Washington, surveying for marine mammals as both the wind and weather were cooperating for visibility. The goal of the day was to get additional drone footage of the Humpback whales as they surfaced. Fairly early in the day we encountered a group of at least five individual whales and were able to successfully complete two drone flights to obtain footage of the animals. Our drone operator recently graduated from the Drone Academy at Career Tech High School with his pilot’s license and has been collaborating with the chief scientist onboard, Dr. Leigh Torres, to capture overflight video of whale for photogrammetry analysis, which helps assess body condition or overall health.

During one early whale sighting, we also had a solitary sea lion and a sea turtle right in front of the bow of the ship. The sea bird activity picked up as well, demonstrating how cold Pacific Northwest waters provide a favorable habitat for many types of marine animals.

Before lunch we conducted another plankton tow in order to obtain some samples to help with the education outreach effort that will be happening once we dock in Portland. While we didn’t catch as much in volume compared with the night tows, one of the students on board did attach a camera to view the organisms entering the tow net. The tow brought up a jelly with a bell size of approximately 18 cm (7 inches) in diameter as well as more krill, copepods (tiny crustaceans), a ctenophore (comb jelly), amphipods (more tiny crustaceans), a siphonophore (also related to jellies), and several other species. The video footage of the tow captured the jelly, ctenophore, and many other interesting images, including the flow meter stopping and starting as the ship moved over the ocean swells.

As we made our way south towards Oregon waters, three Orcas (killer whales) crossed our path and we diverted our trip to observe the animals for a while. I was working on this blog post when the boat stopped suddenly and several of us raced outside after putting on our PFDs (personal flotation devices – safety first) to get a glimpse of the animals. The head marine mammal researcher identified one adult male and hypothesized the other two were possibly juvenile males given their size. Most of the rest of the day was spent cleaning up, sharing files of data, pictures, and videos, and preparing for the next two days in Portland.

Marine education has been a passion of mine since I was a kid, and this experience has given me a new perspective and appreciation of what researchers do to gather data. While on the ship I have been sharing brief stories and a few pictures and videos with my students back home and have had a chance to answer some of their questions regarding equipment and marine life. I’ve learned so much on this research cruise that I can share with my students for years to come, and I will be able to connect them with researchers and opportunities in the future thanks to my time here.

Orcas

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Sara Pursel teaches science at Lincoln County School District’s Taft High School in Lincoln City, Oregon. She holds a Bachelors of Science degree in Biology with Chemistry minor, and a Masters of Education degree. In addition to joining this STEM research cruise, Sara has participated Oregon Coast STEM Hub professional development trainings and has checked out materials from the STEM Hub resource trailer.

Day three on the Oceanus: Unexpected Gifts

Posted on September 26, 2018 by Cait Goodwin

By Tracy Crews

This post is part of a series about the 2018 STEM research cruise taking place this week on board the R/V Oceanus. Other posts in this series include Tracy’s report from Day One, and a post from high school student Alishia Keller from Day Two.

Pacific white-sided dolphins

We started out our research cruise off the Oregon Coast, but as the wind increased down south impacting visibility, we tried our best to outrun it by heading north, into the waters off of Washington. We started out the day over Gray’s Canyon, surrounded by thick fog, wondering if we had traded one weather problem for another. But as the sun rose higher in the sky it burned off the fog and we were able to resume our survey tracks, zig-zagging back and forth from the shallower edge of the canyon, through the deeper water, then back to the other side again. Our quest today was to find those large, elusive whales known to prefer deep water, like sperm whales, beaked whales, and blues.

It wasn’t long before we saw a large pod of Pacific white-sided dolphins, estimated to be 230 in number by our two marine mammal researchers. Soon the dolphins surrounded the boat, darting out of wave crests, performing acrobatics and dancing in the wake of the vessel. The speed and agility they displayed was truly astounding. But as much as we enjoyed their antics, it was time to resume our search for their larger relatives.

Sperm whale fluke

Soon thereafter, as we made our way into deeper water, a solitary sperm whale was spotted. Everyone was excited to see such a rare sight but it wouldn’t last for long. Immortalized in books like Moby Dick, these large, toothed whales are impressive divers and once submerged can stay down for 45 minutes or more. Unsure when or where it would resurface, we continued along our survey transect.

As we moved back into shallower waters, we began to see more of the humpback whales that we have become so familiar with over the last few days. Most were traveling in small, close-knit groups, synchronized as they moved through the water. Others could be seen diving together then “logging” at the surface, floating to conserve energy and recover before diving once again.

More oceanographic surveying

As the day wound down and wind picked up, we shifted gears to conduct some more CTDs (oceanographic surveys) and decided to conduct another nighttime plankton tow to compare to what was caught the previous night in the Astoria Canyon, off the Columbia River. As we gathered outside on the back deck to watch the sun sink below the horizon, one of the teachers pulled out his guitar and harmonica and we were presented with one last amazing gift, something mariners often wait a lifetime to see- a green flash.

Waiting for the green flash

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Tracy Crews is the Marine Education Program Manager for Oregon Sea Grant, the Student STEM Experiences Coordinator for the Oregon Coast STEM Hub, and the Principal Investigator for the STEM research cruise taking place this week on the R/V Oceanus.

This cruise is funded by Oregon Legislative funds with additional support from Oregon Sea Grant and Oregon State University. Track the R/V Oceanus at marinetraffic.com, and see more photos of this expedition on the Oregon Coast STEM Hub Facebook page.

Whales, Shrunken Cups, and Plankton Tows by Moonlight

Posted on September 25, 2018 by Cait Goodwin

By Alishia Keller
Bandon High School ’19

This post is part of a series about the 2018 STEM research cruise taking place this week on board the R/V Oceanus. For an introduction to the cruise, read yesterday’s post by the cruise’s Principal Investigator Tracy Crews. Today’s post is from a student’s perspective:

Today was the first full day at sea. Though much of the group spent yesterday in their bunks with seasickness, they all were present for today’s activities.

We woke and gathered in the dining area for breakfast before heading up to the flying bridge to observe marine mammals. There were patches of bait balls (groups of small fish) followed by flocks of gulls. Though we saw a few individual humpback whales, they were typically seen in pods of three or four.

During our whale observations, we witnessed a whale lunge feeding. This is when a whale lunges out of the water, exposing its enlarged buccal cavity which expands like an accordion to accommodate a large amount of water and the krill on which it feeds.

Seeing consistent whale activity led us to deploy the CTD to collect oceanographic data, and a plankton tow to observe the abundance of food available. Afterwards, we continued to observe the humpback whales. Though we saw many whales, not many flukes were visible, which made it difficult to photograph and identify the individual whales.

getting ready to deploy the CTD with styrofoam cups attached

Styrofoam cups ready for deployment

Right before lunch we gave up due to increasing winds which made observations difficult, so we headed North to Astoria Canyon off the Columbia River to conduct a series of CTDs. During the deepest deployment, we attached bags of Styrofoam cups decorated by our group, as well as students from some of their classrooms. The cups were sent to over 700 meters depth causing them to shrink to half their original size due to the high pressure.

Styrofoam cups after their trip to the deep ocean

After recovering the CTD and cups, our group gathered to eat ice cream and enjoy the magnificent sunset in the West, mirrored by the full red moon to the East. Our last research effort for the night was another plankton tow which yielded more krill, lantern fish, a baby octopus, and many other cool critters.

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Alishia Keller is a senior at Bandon High School in Coos County, Oregon. After high school she plans to go to college to study ecology and sustainability.

Shipboard Experience on the Oceanus

Posted on September 24, 2018 by Cait Goodwin

By Tracy Crews

Surveying the horizon for marine mammals and seabirds

This weekend, a science party of 13 researchers, students, and teachers gathered aboard Oregon State University’s research vessel, the Oceanus, to begin a four-day research cruise aimed at providing mentoring and career connections at sea. The team mission is to conduct marine mammal and sea bird surveys and correlate sightings with oceanographic data and prey distribution. Participants in this cruise include high school teachers and students from Bandon High School, Taft High School in Lincoln City, and Warrenton High School, as well as college students from Southwestern Oregon Community College, Oregon Coast Community College and Oregon State University.

Deploying the CTD

While adapting to life at sea, these teachers and students are learning to handle lines and deploy oceanographic equipment, how to identify marine mammals, seabirds, and plankton. They aren’t just observers but active participants in the science party, operating critical equipment, including hydraulics and data collection systems.

The first day we experienced sunshine and many successes. Participants mastered their seasickness, and went on to deploy and retrieve plankton nets and CTDs. The abundance and types of plankton (small floating plants and animals) captured in the fine-mesh nets, and the physical parameters of conductivity (salinity), temperature, and depth measured by the CTDs will help researchers characterize the water column.

In addition, we surveyed over a dozen humpback whales and numerous porpoises, and used a drone to capture video footage of a humpback whale from above. The video data will help researchers from OSU’s Marine Mammal Institute assess the whale’s body condition, an indicator of overall health.

Life on the water is often exhausting, and after a 14 hour day, we are all ready for some much needed sleep. Laying in our bunks as we are rocked to sleep, we dream of what tomorrow will bring.

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Oregon Coast STEM Hub

Fostering Science, Technology, Engineering and Math Futures on the Oregon Coast

Monthly Archives: September 2018

Drones, Plankton, and Orcas: Day Four on the Oceanus

Day three on the Oceanus: Unexpected Gifts

Whales, Shrunken Cups, and Plankton Tows by Moonlight

Shipboard Experience on the Oceanus