Kristy Weaver: What’s a Reef Fish Survey? May 30, 2012


NOAA Teacher at Sea
Kristy Weaver
Aboard The R/V Savannah
May 23 – June 1, 2012

Mission: Reef Fish Survey
Location: 44 miles off the coast of Jacksonville, FL
Date: May 30, 2012

Current Weather: 80 degrees and sunny

Science and Technology Log

Today is our last full day at sea.  We have caught about 2,000 fish in the past week!  A lot of them were thrown back into the water because we only need to keep a fraction of them for the reef fish survey.  The fish that we keep are studied by the scientists for a few reasons.

First, every fish we catch is measured and weighed.

David, a fisheries biologist, measures every fish that we catch

Then we have a sheet that tells us which fish we “keep” and which fish we “toss” back into the ocean.

Stephen writes down the length of every fish as David calls out the numbers

After Stephen writes down the length he uses this paper to tell David to keep the fish or toss it back into the ocean

Every fish that we keep gets its own ID number and envelope.

After it gets dark we stop fishing and go inside to the lab to collect information about the fish we caught that day.  Every single fish that we keep gets its own ID number, and gets weighed and measured again.  We write everything down.  These notes are data.

Here I am writing down the length and weight of each fish as Stephen weighs and measures them

When you make observations using your senses you are collecting data too!  Can you think of a time you collected data or made an observation like a scientist?

After we  record the length and weight I give Stephen the envelope and the other scientists come get the fish.

Passing Stephen the envelope for the fish he just measured and weighed

Scientists Jennifer and David take parts of the fish that they will study under a microscope later

Once all of the information is brought back to the scientists at the lab, they look at different parts of the fish using a microscope.  This will tell the scientists three main things…

1) Is the fish a male (boy) or a female (girl)?

2)How old is the fish?

And

3) Are these fish from all different families, or are they all related to each other?

Once the scientists answer these questions, they can decide if its okay for people to go fishing for certain types of fish, or if too many fish are being taken out of the ocean and need to be protected.  Right now fisheries are not allowed to take Red Snapper out of the Atlantic Ocean.  That fish is a very important part of our survey.

Special thanks to Captain Raymond and the crew and of the R/V Savannah and to Zeb, the chief scientist, and his team of scientists for a great experience!

Ok, I got him!  He was heavy!

This Red Snapper nearly knocked me over

4 responses to “Kristy Weaver: What’s a Reef Fish Survey? May 30, 2012

  1. Thanks for sharing can’t believe you held that stinky fish! L
    Glad you are back we missed you and so proud of you!

  2. We can’t wait to see the rest of the pictures. We liked the picture of the big red snapper. Love, Ms. Schwab’s Class

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