Have you seen a jellyfish on the beach? Report it to Jellywatch -- a global public database documenting ocean conditions. We are especially interested in jellyfish washing up, but we also track red tides, squid and mammal strandings, and other indicators of ocean health. All the data and images that are submitted are freely and instantly available for bulk download, so students, teachers, and scientists can conduct their own research using information gathered from around the globe.