From ESRI:
Esri [recently] announced that its innovative Ecological Marine Units (EMU) app [free] is now available for mobile devices. The app provides a valuable resource for scientists, educators, governments, and industries seeking easily accessible information and imagery about the ocean’s long-term physical and nutrient properties.
The EMU app puts data such as temperature, salinity, and dissolved oxygen from 52 million locations throughout the world’s oceans at any user’s fingertips. This data informs how livable marine environments are for ocean-dwelling species as well as the overall health of the ecosystem.
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The primary data source for the EMU mobile app is the National Oceanic and Atmospheric Administration’s (NOAA) authoritative World Ocean Atlas, with marine chemistry information from the National Aeronautics and Space Administration (NASA) and topographic data from GRID-Arendal. The app provides access to this globally comprehensive, data-driven 2D and 3D data and serves as an educational tool for easily understanding marine environments and how they are affected by climate change.
Learn More, Download for App For Android (via Google Play)
Learn More, Download for App For iOS (via iTunes App Store)
Direct to ESRI EMU Website