1 00:00:13,230 --> 00:00:15,980 Phytoplankton are microscopic plants in the ocean. 2 00:00:16,000 --> 00:00:18,130 Countless... 3 00:00:18,150 --> 00:00:24,430 ...and the number of different kinds hard to quantify. 4 00:00:24,450 --> 00:00:39,250 That's biodiversity and it's a delicate balance. 5 00:00:39,270 --> 00:00:44,690 Oceans cover the Earth, so phytoplankton health matters to you too. 6 00:00:44,710 --> 00:00:52,490 Ocean research programs at NASA will keep an eye on these little guys from space. 7 00:00:52,510 --> 00:01:00,823 NASA: Earth, Science, Life