FIrst, the correct spelling of the scientific name is Halocaridina rubra. Sorry for the misspelling in the title. Videotaped at the Koloko-Honokohau National Historical Park on January 30, 2012. The water level in the pools fluctuates with the tides thus demonstrating their connection to the sea through the porous lava rocks. The surface of the pools is fresh water. The shrimp feed on algae and bacteria on the rocks and algae. These unique ponds have been trashed in past years due to pollution, development and stocking with predatory fish but today many ponds have been restored and provided protection, such as these ponds in the Koloko Park. Underwater scenes videotaped using a GoPro Hero3 Black camera.

Author: Bruce Carlson
Source: YouTube