Northeastern University’s Marine Science Center will host an Under the Sea Mosaic program for Grades 7-12 over the Spring school vacation (April 18-21), combining 3 hours of art and 2 hours of marine science each day.  It will take place 9AM-3PM daily at the Marine Science Center in Nahant, and shuttle buses will be available daily to and from Ruggles, Wonderland, and Lynn/Central Square MTBA stations.  The cost of $280 (plus $40 for those who take the shuttle) per person includes snacks but not lunch. Applications are due April 7, and spaces will be filled on a rolling basis, so apply now. For more information, contact Val Perini at 781-581-7370 x373 or v.perini@northeastern.edu.