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English: Whale penises are fully inside the body until the whale becomes erect. The testicles are inside the body at all times. 1. Genital Slit 2. Penis 3. Anus 4. Testes 5. Vas Deferens 6. Kidney 7. Diaphragm Whale penises are fully inside the body until the whale becomes erect. The testicles are inside the body at all times. 1.
A North Atlantic right whale with solitary calf. Whale reproduction follows a K-selection strategy, with few offspring, long gestation, long parental care, and a long period until sexual maturity. In ecology, r/K selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of ...
The point where a node branches off is analogous to an evolutionary branching – the diagram can be read left-to-right, much like a timeline. The following cladogram of the family Balaenidae serves to illustrate the current scientific consensus as to the relationships between the southern right whale and the other members of its family.
A right whale of 10 m (33 ft) was sighted on January 28, 2014, making it the first record in the East China Sea in the 21st century. [121] One whale about the same size entered the port of Ushibuka, Kumamoto on March 28, 2014. [122] [123] In addition, possibly two different animals were seen off Bonin Islands on 12th [124] and 25th [125] March ...
Whales are fully aquatic, open-ocean animals: they can feed, mate, give birth, suckle and raise their young at sea. Whales range in size from the 2.6 metres (8.5 ft) and 135 kilograms (298 lb) dwarf sperm whale to the 29.9 metres (98 ft) and 190 tonnes (210 short tons) blue whale, which is the
This Decade-Old Whale Carcass Still Supports Life by wildestanimal - Getty Images When a large marine mammal like a whale dies, its body drifts to the ocean floor in a process known as whale fall.
Both reproduction and calving take place during the winter months. [52] Calves are approximately 1 short ton (0.91 t; 0.89 long tons) in weight and 4–6 m (13–20 ft) in length at birth following a gestation period of 1 year. The right whale grows rapidly in its first year, typically doubling in length.
In addition, beluga whales have undergone semen collection, [249] body temperature data collection, [251] reproductive tract examinations via transabdominal ultrasound, and endoscopic exams. [254] With new technology, the reproductive characteristics of both the female and male beluga whale have been accurately described and has benefited ...