From the map above:
North Pacific blue whales were known to winter at the Costa Rica Dome, a nutrient-rich upwelling that supports abundant krill. But its location shifts, so scientists aboard the Pacific Storm research vessel used satellite tagged whales to lead the way. Three of the 15 whales tagged off Santa Barbara made the migration in early 2008. Others wintered off Mexico.
How many blue whales were tagged in this migration study?
Two whales were tagged at the nutrient-rich Costa Rica Dome, off the west coast of Central America. Where were the other whales tagged?
Approximately how far did the whales tagged near Santa Barbara migrate to reach the Costa Rica Dome?
Based on the graphic at the bottom of this map, how long does a blue whale hold its breath while feeding?
The text on this map says that blue whales spend their winters at the Costa Rica Dome. The area has an abundant supply of krill, blue whales' primary food source. Besides eating, what do you think the whales do near the Costa Rica Dome?
Term Part of Speech Definition Encyclopedic Entry animal migration Noun
process where a community of animals leaves a habitat for part of the year or part of their lives, and moves to habitats that are more hospitable.
blue whale Noun
species of marine mammal that is the largest animal to have ever lived.
echo sounder Noun
device that measures the depth of water using sound pulses. Also called a sonic depth finder.
small marine crustacean, similar to shrimp.
substance an organism needs for energy, growth, and life.
Encyclopedic Entry: nutrient research vessel Noun
ship or boat equipped to carry out scientific experiments or collect data.
satellite tag Noun
device attached to animals that can track their movement using satellites and GPS technology.
process in which cold, nutrient-rich water from the bottom of an ocean basin or lake is brought to the surface due to atmospheric effects such as the Coriolis force or wind.
Encyclopedic Entry: upwelling