Juvenile spiny lobsters (Panulirus argus) are known to be gregarious. We studied the preference of spiny lobsters in their association with other individuals. Twenty lobsters were captured for this experiment, paired, and divided into either "dominant" or "subordinate" status. The pairs of lobsters were then placed into the cattle tank with another pair and allowed to interact throughout the night. Spiny lobsters spent significantly more time in their "home" den than the "away" den and were much more likely to be in their "home" den with a familiar individual than with an unfamiliar individual."
Cunningham, K.; Ellis, J.; and Childress, M., "Do spiny lobsters prefer to associate with familiar individuals?" (2014). Focus on Creative Inquiry. 78.