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Blue Whales - Coggle Diagram

- - - - used for:
        
        breeding
        
        avoiding predators
        
        foraging
        
        assessing environment
  - - - used to inhale fresh air into lungs when breaching
    - - bristle-like
      - allows them to capture small prey and to allow water to escape mouth
      - https://a-z-animals.com/blog/blue-whale-teeth-do-blue-whales-have-teeth/
- - - - Blue whales migrate seasonally
        
        blue whales migrate in warmer latitudes in winter
        
        they usually mate and give birth in this season
        
        blue whales migrate in colder latitudes in summer
        
        they usually feed on krill in this season as krill are found in cooler environments #
        
        # # https://www.youtube.com/watch?v=cbxSBDopVyw
        
        blue whales migratory path can be affected
        
        this is due to climate change #
        
        a blue whale migrates based off of the oceans temperature
        
        this leads to blue whales migrating at the wrong time
        
        the blue whale may migrate when the food supply is low
        
        the blue whale may migrate when the mating and birth seasons are in another season
        
        global warming melts the icebergs and snow which contain freshwater
        
        freshwater affects the oceans temperature
      - The blue whale is found in all parts of the ocean besides in the Arctic
  - - - Japan, Norway and Iceland continue to hunt this species
    - - climate change
        
        practice sustainable living
        
        laws to prevent factors that will contribute to climate change
        
        promote campaigns against climate change
        
        funding campaigns and conservation centres
      - human interference
        
        divert shipping lane routes
        
        to avoid blue whales during their seasonal migration
        
        enforce a policy against dumping into oceans
        
        ensure that the marine ecosystem will no longer be poluted
- - - - whales use their echoes to communicate
        
        their echoes are usually used for breeding, foraging, migrating and to avoid predators
      - caused by:
        
        noise arrays emitted from ships
        
        global shipping
        
        gas and oil exploration
      - effects:
        
        temporary or permanent hearing loss
        
        stress
        
        disrupts feeding and nursing
        
        forces animals to change their migratory path
        
        forces animals to migrate
        
        disrupts communication behaviours
      - https://www.fisheries.noaa.gov/national/science-data/ocean-noise
    - - caused by:
        
        overfishing
        
        abandoned fishing gear
        
        pollution
      - effects:
        
        drowns blue whale
        
        wounds
        
        infects
      - https://iwc.int/management-and-conservation/entanglement
    - - moving shipping lanes when whales are abundant reduce the likelihood of ship collisions by 80%
      - https://www.science.org/content/article/blue-whales-being-struck-ships
    - - blue whale's primary food source is krill
      - commercial killing of krill
        
        overconsumption of krill
      - climate change affects the krill's habitat
        
        drastic decline in population of krill
        
        affecting food chain
        
        lack of food for blue whales
    - - caused by:
        
        pollution
        
        agricultural runoff
        
        global warming
        
        litter
      - effects:
        
        blue whales liveability
        
        forces blue whale to migrate
        
        effects reproduction
        
        causes blue whales to contract diseases
      - https://www.pinterest.com.au/pin/486670303463461195/
- - - - shifts in salinity levels
      - shifts in sea level
      - rise in temperature
        
        snow and icebergs melt into ocean
      - ruses the blue whale into migrating at the wrong season
      - shifts in currents
    - - deforestation
      - agricultural farming
      - burning coal for fuel
      - ocean pollution #
        
        effects:
        
        diseases
        
        disrupts thermocline circulation
        
        habitat degradation
        
        reproductivity
        
        caused by:
        
        litter
        
        waste
        
        dumping
        
        fertilisers