Mark McKay, June 17, 2009

NOAA Teacher at Sea
Mark McKay
Onboard Research Vessel Knorr
June 10 – July 1, 2005

Mission: Ecosystem Survey
Geographical Area: Bering Sea, Alaska
Date: June 17, 2009

Great Weather on the Bering Sea
Great Weather on the Bering Sea

Science Log

During the night the Knorr turned south westward to start it’s collecting along the CN (Cape Newenhan) line. We had skirted the edge of Bristol Bay before heading back out to into the Bering Sea. The expedition is following a plan that lets it stop at locations they have stopped at in previous years. This allows the scientists to compare data from multiple years so they can get a more accurate picture of what’s happening in the Bering Sea.

When I got up this morning I had to double check to make sure we were still on the Bering Sea and not something more temperate. The sky has been clear and the air temperature has been a “balmy” 45º F. May be I’m getting used to the weather but I had to take my jacket off to stay comfortable. The weather change quickly up here and may be totally different, and more severe later today. Best to be prepared for anything! So far the trip has been surprisingly pleasant. The one thing I’m not used to is the fact that the sun is always up. At 10 o’clock at night I step outside and it’s just like noon back at home.

Looking for critters in the core sample
Looking for critters in the core sample

Today is going pretty much like previous days. Everybody knows their job and goes about it in a efficient manner, meaning don’t get in the way, you are likely to get bowled over. They sent down the Multicore Apparatus again this morning. Hit a pretty sandy bottom but this time they had an unexpected hitchhiker. One of the cores came up with a Echiuran worm. Interesting creature. It has the consistency of a full water balloon, and is similar to the “innkeeper worms” which are common back home in California. Makes is living eating detritus in sediments that it pushes to its mouth with its proboscis (snout). Some types of Echiurans feed by making a “net” of mucus that captures detritus in the water. They then pull in the mucus and eat the captured detritus.

The zooplankton people are having fun with their collecting with one exception. Apparently the waters we have been sailing are fairly heavily populated with Jellyfish. The “Jelly’s” apparently gum up the collection bottles making collection little more difficult. I was watching as they tried to clean them out of their nets and it is a sticky mess. More on that later. For now, dinner! The food on the Knorr is great by the way.

Echiuran Worm
Echiuran Worm

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