We are creating a Field Ready eDNA analyzer to increase our understanding of marine animals. It can be used by a citizen scientist to quickly sense the presence of an animal from a sample of ocean water. The device will be open source, inexpensive, reusable, and adaptable to other species. We will create an example device will be able to detect the presence of sea nettle jellyfish. The species is of interest to people (to avoid stings), and is also prey to important marine megafauna.