An ocean current is a continuous, directed movement of seawater generated by forces acting upon this mean flow, such as breaking waves, wind, the Coriolis effect, cabbeling, temperature and salinity differences, while tides are caused by the gravitational pull of the Sun and Moon.
RDDs - Radar Detector Detectors, All Acronyms, viewed April 15, 2017, <https://www.allacronyms.com/RDDS/Radar_Detector_Detectors>.
MSDS - Overview of Material Safety Data Sheets. A Material Safety Data Sheet (MSDS) is required under the OSHA Hazard Communication Standard (regulations) , with guidance for employers (guidelines) . The MSDS is a detailed informational document prepared by the manufacturer or importer of a hazardous chemical.