Pygmy Sperm Whales are oceanic animals, moving across and over the continental shelf to feed. Primarily the Pygmy Sperm Whale eats small fish, cuttlefish, deepsea shrimps and squid. There have been very few observations of the Pygmy Sperm Whale, and these suggest that it is a sluggish and slow-moving animal. The blow is inconspicuous and low, and after blowing the cetacean simply drops out of sight. It rarely approaches boats, and when startled evacuates a reddish-brown intestinal fluid as a decoy before it dives.
Pods contain less than ten individuals.