Invasive Crab Species Search and Identification- Rock Crab

Using a bucket, net, and bare hands, the group searched the intertidal and spray zones to find the Rock Crab invasive species. Many of the crabs were found under rocks and wooden planks. They were then catalogued based on visual characteristics to identify them to the correct species. The group also took pictures for more evidence of the species. The Vital Signs field sheet was also used to identify the Rock Crab. The coloration of the Rock Crab made it much easier to identify in a group of Green and Asian Shore Crabs. Out of 48 crabs, only 1 male Rock Crab was found.

Project Information
City or Town: 
Hampton, NH
School or Organization: 
Winnacunnet High School
Scientific name:
Cancer irroratus
Common name:
Rock crab
Coastal - Rocky intertidal
Resources I used to create this project: 
An in-class lab practicing identification of different crab species found in the Hampton, NH area. During the lab at the beach, the Vital Signs ID cards were used to help prove that the crabs were the species that the group thought they were.