Going green? – A satellite image of the Chukchi Sea, between Alaska and Russia, shows phytoplankton bloom (in green).
Phytoplankton found in the Arctic – Scientists on NASA's ICESCAPE expedition discovered vast amounts of phytoplankton blooming under sea ice, thanks to the magnifying properties of melt pools.
Melt-water pools – ICESCAPE scientist Karen Frey takes optical measurements in a melt pond, which lets four times as much light through to the sea below as snow-covered ice.
Robots to find algae – WHOI biologist Sam Laney used this submersible Imaging FlowCytobot, which helped detect a toxic algal bloom in the Gulf of Mexico in 2008, to photograph marine organisms and measure chlorophyll fluorescence.