Krill swarm in Monterey Bay, California (IMAGE) Monterey Bay Aquarium Research Institute Caption Small shrimp-like crustaceans called krill are an important part of the diet of blue whales. Seasonal upwelling drives dense aggregations of krill in Monterey Bay, attracting foraging whales. Image: © 2003 MBARI Credit Image: © 2003 MBARI Usage Restrictions Image may not be added to any stock library and may only be used for coverage related to this release. Please email pressroom@mbari.org for any inquiries about use. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.