Sharpest electrical sensitivity (experiment)
How long is the shark's gestation period?
Sharks vary in gestation period from about 5-6 months to 2 years [Source: Carrier, Oregon Coast Aquarium]. The gestation period of the spiny dogfish is 24 months, which is the longest among all vertebrates, not just sharks [Source: Bester].
What is the breeding speed of sharks?
Larger sharks have a longer gestation period than smaller sharks and often breed every two years, while smaller sharks have offspring each year. Shark egg. After mating, females place their eggs in rocks and algae, sometimes in several bags called mermaid bags.
Do sharks breed fast or slowly?
Sharks breed slowly and do not give birth to many puppies. This makes them vulnerable to human threats. Slow Growth-As an extreme example, greenland sharks can live up to 400 years and only start to have their own puppies when they reach 150! Many people are killed before they breed.
How long does a mother's shark carry a baby?
Pregnancy lasts for years in some species. Some scientists estimate that basking sharks can last up to 3.5 years. Frilled sharks can also carry puppies for over 3 years. Some small species are on the other side of the spectrum. Hammerhead sharks, for example, give birth after about five months.
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