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These seven whale foetuses show the development of humpback whales in the first few months of their lives. Ranging from a few days to around seven months old, the specimens have been in the Museum's collections for more than 100 years and are of great value to scientists. The sixth foetus in the series begins to look like a tiny humpback.
- The Thames Whale
It had ventured a long way from its home in the deep waters...
- When Whales Walked on Four Legs
This five-metre-long animal had proper flippers and tiny...
- The Social Lives of Whales
Several types of cetaceans live in close-knit family groups...
- Secrets of The Deepest Diving Whales
One individual made two extremely long dives of 173 minutes...
- The Thames Whale
Beluga Whale: 14 – 15 months (females give birth to a single calf every 3 years). Blue Whale: 11 – 12 months (females breed every 2 – 3 years). Killer whale: 15 – 18 months (average is about 17 months). Females give birth every 3 – 5 years. Note: Killer whales are part of the dolphin family and are the largest among the dolphin species.
In most whales, reproductive maturity occurs late, typically at 7 to 10 years. Whales breed seasonally, usually in warm tropical waters and females usually have one calf every 1 – 3 years. The gestation period ranges from 9 – 18 months. Whale calves can swim soon after birth.
In almost all cases, the female gives birth to a single offspring every 1 – 6 years. Gestation periods can vary greatly depending on the whale’s species and can be anywhere from 9 to 18 months long! Some whale species begin their journey of mating and producing offspring by making large migration trips thousands of miles from their feeding ...
- How Do Whales Do It?
- Built to Purpose
- Courtyard Foreplay
Although cetaceans live under water, they are mammals all the same. The young develops in the mother’s uterus and is fed directly by the placenta and later, after it is born, by her milk. In short, with a few minor differences, whales do it… just like we do!
In most species, the only fail-safe way to visually distinguish the sexes is to examine the genital slits. In females, it is located at the base of the belly. This is where the vaginal opening is found, immediately next to the anus. On each side of the slit, there is a fold of skin that conceals a nipple. The male has a genital slit into which the ...
Before the two actors take the stage, an intense competition can take place between males of the same species. Sometimes, this competition takes the form of aggressive fighting, as in the case of the humpback whale. For blue whales, males race for a female, a race nicknamed “rumba”. In fact, each ejaculation of a blue whale could produce around 20 ...
In some cases, a female may not have another calf for 10 years. Calf at Birth. Size estimates of SeaWorld-born killer whales suggest that newborn calves are about 2.6 m (8.5 ft.) long and 120 to 160 kg (265 to 353 lbs.). In the first few days after birth, the dorsal fin and tail flukes are flexible and pliable. They gradually stiffen.
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5 days ago · Overview. Sperm Whale. live at least 60-70 years. form “nursery schools” that contain between 20 and 30 whales; females, calves, and juveniles (male and female). the brain is the largest of any animal, about 9 kilograms. Adult males (bulls) reach more than 15 metres (50 feet) in length and weigh 54,400 kilograms (120,000 pounds, 60 tons).
