May 15

Shells and Hermit Crabs

Scientists classify everything! PreK scientists continued their study of the ocean with a lab that focused on shells. At the end of lab, they were each given a bag of shells to classify by physical properties of their choice- types, color, size, texture, luster, etc.

To conclude lab, I took our hermit crabs out of their habitat for us to observe.Hermit crabs are born in the ocean and find a shell in which to live. They have five pairs of legs and their eyes are on stalks. They are nocturnal, oviparous, and omnivores. Although terrestrial, they breathe through gills and require both freshwater and saltwater to keep their gills wet (a fact that many pet owners don’t realize.)

Have you ever seen a hermit crab change shells?

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