27509
In the western North Atlantic , there were an estimated 1,100 – 1,500 prior to modern whaling , A summer shipboard survey in 1987 resulted in a maximum estimate of 442 blue whales off Iceland .
 North Atlantic, Iceland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 North Atlantic, Iceland