Please help me with my summary?!!

[SUMMARISE THIS EXTRACT] Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too small for the human eye to see. They drift about lazily with the currents, providing a basic food for many larger animals. Plankton has been described as the equivalent of the grasses that grow on the dry land continents, and the comparison is an appropriate one. In potential food value, however, plankton far outweighs that of the land grasses. One scientist has estimated that white grasses of the world produce about 49 billion tons of valuable carbohydrates each year, the sea's plankton generates more than twice as much.

Despite its enormous food potential, little effort was made until recently to farm plankton as we farm grasses on land. Now, marine scientists have at last begun to study this possibility. Especially as the sea's resources loom even more important as a means of feeding an expanding world population. No one yet has seriously suggested that "planktonburgers" may soon become popular around the world. As a possible farmed supplementary food source, however, plankton is gaining considerable interest among marine scientists.

One type of plankton that seems to have great harvest possibilities is a tiny shrimplike creature called krill. Growing to two or three inches long, krill provide the major food for the giant blue whale, the largest animal ever to inhabit the Earth, realizing that this whale may grow to 100 feet and weigh 150 tons at maturity, it is not surprising that each one devours more than one ton of krill daily. Krill swim about just below the surface in huge schools sometimes miles wide, mainly in the cold Antarctic. Because of their pink color, they often appear as a solid reddish mass when viewed from a ship or from the air. Krill are very high in food value A pound of these crustaceans contains about 460 calories-about the same as shrimp or lobster to which they are related.

[MY SUMMARY]

The passage elaborates on the characteristics of plankton as well as comparing it with land grasses. First, plankton, which worldwide seas are abound in, comprises a great number of small creatures and is the food source for bigger animals. Although plankton far surpasses land grasses regarding potential food value, fewer attempts were made to farm plankton. Nevertheless, great attention is being drawn to marine scientists. Krill, a shrimplike animal cited as one typical kind of plankton that offers considerable harvest possibilities, range from two to three in length and mostly inhabit the cold Antarctic. Moreover, they provide high food value as their number of calories per pound is approximately equal to that of shrimp or lobster.