As global warming increases, more snow and sea ice is melting. This increasing amount of sea ice that is melting in the Arctic can lead to an increased production of algae, which means more food for the organisms in the ocean. This melting ice leads to larger melt ponds. In these melt ponds, algae and bacteria can form, leading to more food for sea creatures.
These melt ponds are basically their own ecosystem. The algae is released into all the surrounding seawater. Some food is immediately eaten by animals high up in the water column and the rest sinks down to the bottom where it gets eaten by seabed dwellers. So even though global warming is increasing and the ice caps are melting, it does have some positive affects on the organisms.