Orca Populations
In 2005, Southern Resident orcas were classified as this.
What is Endangered?
This is an alternative to boat-based whale watching that reduces noise on the water.
What is land-based whale watching?
This method of locating becomes less effective when marine background noise is present.
What is echolocation?
This is the name of the physical condition scientists observed in malnourished orcas.
What is "peanut head"?
Protecting the habitat of this prey species is a direct way to improve the nutrition of Southern Resident orcas.
What are Chinook salmon?
These are the three types of orca population.
What are Residents, Transients, and Offshore orcas?
Because of the vagueness of laws protecting marine mammals and the ignorance of large amounts of the general public, it is difficult for officials to do this.
What is enforce regulations?
Whales need to increase the volume of their echolocation calls as this rises.
What is marine noise pollution?
In 2017, no orca offspring survived due to this.
What is malnutrition?
This method eases the workload on scientists by getting help from outside sources such as commercial fishing vessels to collect more data on whales.
What is community science?
The range of Southern Resident orcas includes the shores of these 3 states/provinces.
What are British Columbia, Washington, and Oregon?
San Juan County spends roughly this much on non-local boat based tourism annually.
What is $1074?
Since 1950, marine noise has been increasing by this amount each year.
What is 3 decibels?
Anthropogenic noise can affect these 3 aspects of orca prey species.
What are behavior, Physiology, and Anatomy?
Under this policy act, vessels are prohibited from being within 300 yards of Southern Resident orcas.
What is the Marine Mammal Protection Act?