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Wildlife Spotting

Photo by AJ Arruda
Published on Project Noah
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-6.20063, -50.3613

Field Notes

Description:

Spider floating on the water surface at Carajás National Forest, Pará, Brazil

Size: less than 3 cm.

Habitat:

Flooded fileds over iron rock outcrops.

Species ID Suggestions

Comments (3)
AJ Arruda
Thanks MrsPbio, you are right. It is the surface tension of water that allows this spider living in these flooded areas. If you want to use this image in your classes you already have permission. Best regards!
MrsPbio
If you look very closely, you will see that it isn't truly "floating"... but instead it is on TOP of the water surface. It's weight is spread out over a large area, with only the tips of the feet touching. It is standing on the "skin" of the water, called the surface tension. Very very cool photo showing this. (If I was still teaching, I'd ask for permission to copy this photo to use in either a life science or a chemistry class, since it shows how strong the molecules of water stick together! )

Spotted for Missions

Mission
International Spider Survey
Photographed
PublishedMay 23, 2016

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