For Undergraduates:
Paid Summer 2015 Undergraduate Research Placements:
Over 800 programs – REU, NASA and other paid summer research opportunities for undergrads
http://www.pathwaystoscience.org/undergads.aspx
For Financial Support in Graduate School:
Fellowships and graduate programs in a wide variety of STEM disciplines:
http://www.pathwaystoscience.org/grad.aspx
For NASA-supported internships, fellowships and scholarships:  
http://intern.nasa.gov
For tips on applying and associated resources:
http://www.pathwaystoscience.org/toolbox.aspx
For opportunities specifically in the Ocean Sciences:
http://www.pathwaystoscience.org/oceanscience.aspx
For opportunities specifically in Engineering:
http://www.pathwaystoscience.org/engineering.aspx