7. Beluga 40- 60 years
Blue whale 70- 90 years
Bowhead whale 100- 200 years
Fin whale 60- 100 years
Gray whale 50- 70 years
Humpback whale 40- 100 years
Narwhal 40- 60 years
Sperm whale 60- 80 years
Females mature when they hit 11.7 m and males, 11.1 m
Life span: Around 40- 100 years
Average life expectancy: 30- 70 years (healthy, non endangered)
S- shaped loop when retracted
Guided by muscles
Sperm retention due to no semen coagualtion (absence of seminal vesicles and bulbourethral) (semen coagulation to retain semen in vagina and help sperm motility towards uterus)
Stimulates penis to promote ejaculation
Endocervix- Inner lining of cervix
Bowhead whale- Stay in the Arctics
Wean when they are 7- 9 m long (Gray whales)
Position body away to keep genital slit out of reach
Heat runs- Humpbacks batter one another with fins
Whale songs
Deep, throaty, clicks, groans, etc.
Travel long distances underwater to allow females to locate males
May be a means of communication
30 Hz- 8 kHz (We hear best from 1- 5 kHz)
Beaked whales- Scars, fractured beaks
Pods are generally relaxed and friendly
Blue whale males thrust penis into vulva while flying up and ejaculate
Rarely observed
Belly- to- belly: Gray whale
Menage a trois: Gray whale
Harbour porpoise: 2 kg testes (Wt.: <60 kg)
Give birth close to the surface
How long do they lactate?
Adults stop growing when they are 40 years