Sunday, 9 November 2014

Day 5- Sampling the Sea Floor in Antarctica. Virtual Field Trip

What does benthic mean and what sorts of animals live in the benthic community?
What do sessile (non-moving) creatures tend to eat?
What types of feeders are sea urchins compared with sea stars?

 
The benthic community from LEARNZ on Vimeo.

What are the scientists trying to work out?
How are results recorded?
What can Sal and his team do to improve the accuracy of their results?

 
Sampling the sea floor from LEARNZ on Vimeo.


How does Rebecca catch fish from under the sea ice?
What does Rebecca use to attract the fish?
What does Rebecca want to find out from these fish?

 
Ice fishing from LEARNZ on Vimeo.

Sampling antarctic sea floor

By Arthur

Benthic communities  

  • Benthic animals are animals that live on the bottom of the sea bed.
                  
  • They eat differently.
  • Sponges will eat really small stuff.
  • Bigger things like starfishes will eat slightly bigger things
  • The food web


           Sampling the sea floor

  • They take things with them to take samples.
  • They take samples from different places.
  • They have cameras with them at all times.


            Ice fishing

  • There are 2 species of ice fish.
  • The ice fishes are very low down in the food web.
  • They drill down to get to the sea ice.
  • There is a light on the end of the fishing rod to attract the fishes where it is dark.
Sampling the sea floor in Antarctica


The Benthic community.


What does benthic mean and what sorts of animals live in the benthic community?
What do sessile (non-moving)


Facts:

Benthic animals living on the bottom attached to the bottom don’t move as much as sea stars and worm like creatures. If you take something out of a food web it isn’t a food web anymore. If something comes out of the food web the food web could collapse.


Sampling the sea floor


They point a machine at the ice to see how brown it is. Sometimes just go around with a normal waterproof camera.


Ice Fishing

If there’s snow covered fish you have to dig through the snow, looking at fishes muscles, you can look at the ring to see how old a fish is.

By Milly and Anna

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