2019 / 04 / 12
What is a laryngeal sac?
The laryngeal sac is a structure found in baleen whales, but also in many other mammals, including primates (but not humans!). Lying between the mouth and the trachea, it is a cavity associated with t...
2019 / 02 / 18
Correlation Confirmed Between Military Sonar and Beaked Whale Mass Strandings
Noise pollution is a growing threat for whales, notably for the beluga population of the St. Lawrence, which is affected by the frequent passing of commercial vessels. Elsewhere in the world, such as ...
2018 / 10 / 16
How do whales go on long dives?
Whales are marine mammals that dive for various reasons, such as: feeding and mating. Their prey are found at varying depths under the water and depending on where in the water column that is, whales ...
2016 / 01 / 29
Breaching: Energy-Intensive but Beneficial for Diving
Myoglobin carries and stores oxygen in the muscles of vertebrates. It is particularly abundant in marine mammals and is believed to be the key to their exceptional diving abilities. A team of research...
2015 / 10 / 14
How Far Away Can Sperm Whales Detect Their Prey?
In order to be able to feed in waters over 1,500 m deep where light is absent, the sperm whale is equipped with a long-range echolocation system. It produces unidirectional clicks of 235 dB re 1 μPa....
2015 / 09 / 15
What do Minke Whales do in the estuary of St. Lawrence?
The minke whale is a fast and agile predator, but as with any marine mammal, it must come to the surface to breathe. This is the compromise between the need to feed below the water surface and oxygen ...
2015 / 09 / 09
Can whales experience the bends like divers do?
Marine mammals, being champion divers, have morphological, physiological and behavioural adaptations not only to reduce nitrogen accumulation in their tissues, but also to manage nitrogen that has acc...