The blue whale is the heaviest and longest animal on Earth. The average adult length is 25m (82ft) in males and 26.2m (86ft) in females, with body weights of 90-120 tonnes.
Hector´s dolphin is the world´s smallest cetacean. They may be only 1.2m (3ft11in) long when fully grown. Although, taking average lengths, the finless porpoise is probably the lightest weighing 30-45kg (66-69lbs); nearly 3000 finless porpoises would weigh roughly the same as one blue whale.
A “blow” or “spout” is the cloud of water droplets produced above a whale´s head when it blows out. The tallest blow belongs to the blue whale where blows of up to 12m (39ft 5in) have been reported.
A blue whale eats up to 4 tonnes of krill everyday. This is equivalent to eating a fully grown African elephant every day.
Early whalers reported dive times of more than 2 hours for northern bottlenose whales.
The sperm whale is believed to dive deeper than any other cetacean. They have been known to dive as deep as 2000m (6560ft)
One bowhead whale was reported to have been 130 years old when it died!
The sperm whale has the world´s heaviest brain which can weigh up to 9.2kg (20lb 5oz). This compares with the average 1.4kg (3lb 1oz) for the brain of an adult human.
Tallest dorsal fin:
The huge dorsal fin of the bull orca (killer whale) can reach a remarkable height of 1.8m (6ft), roughly as tall as a man.
A bull orca, has been timed swimming at 55km/h (34 mph) in the eastern North Pacific.
Blue whales by one of North Sailing´s boats. The boat is 16 meters long.