Northern California Nesties
Dear Community,
Our tech team has launched updates to The Nest today. As a result of these updates, members of the Nest Community will need to change their password in order to continue participating in the community. In addition, The Nest community member's avatars will be replaced with generic default avatars. If you wish to revert to your original avatar, you will need to re-upload it via The Nest.
If you have questions about this, please email help@theknot.com.
Thank you.
Note: This only affects The Nest's community members and will not affect members on The Bump or The Knot.
Our tech team has launched updates to The Nest today. As a result of these updates, members of the Nest Community will need to change their password in order to continue participating in the community. In addition, The Nest community member's avatars will be replaced with generic default avatars. If you wish to revert to your original avatar, you will need to re-upload it via The Nest.
If you have questions about this, please email help@theknot.com.
Thank you.
Note: This only affects The Nest's community members and will not affect members on The Bump or The Knot.
RFOTD
Hammerhead sharks can give birth to 40 babies at once.
Re: RFOTD
It could be called "Putting the Hammer Down!"
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SO DH and I started talking about it and wondered if they give birth to live young. Yes, they do. This is from http://en.wikipedia.org/wiki/Hammerhead_shark
Reproduction
Reproduction only occurs once a year for hammerhead sharks and usually occurs with the male shark biting the female shark violently until she agrees to mate with him. [10]The hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young. Like other sharks, fertilization is internal with the male transferring sperm to the female through one of two intromittent organs called claspers. The developing embryos are at first sustained by a yolk sac. When the supply of yolk is exhausted, the depleted yolk sac transforms into a structure analogous to a mammalian placenta (called a "yolk sac placenta" or "pseudoplacenta"), through which the mother delivers sustenance until birth. Once the baby sharks are born, they are not taken care of by the parents in any way. There is usually a litter of 12 to 15 pups; except for the Great Hammerhead, there are usually 20 to 40 pups. These baby sharks huddle together and swim toward warmer water and stay together until they are older and bigger to be on their own. [11]
In 2007, the bonnethead shark was found to be capable of asexual reproduction via automictic parthenogenesis, in which a female's ovum fuses with a polar body to form a zygote without the need for a male. This was the first shark known to do this.[12]
Diet
Hammerhead sharks are known to eat a large range of items including fish, squid, octopus, crustaceans, and other hammerhead sharks. Stingrays are a particular favorite. These sharks are found many times swimming along the bottom of the ocean and stalk their prey. Their unique head is used as a weapon when hunting down prey. The hammerhead shark uses its head to pin down stingrays and eats the ray when the ray is weak and in shock.[13] There is a species of the hammerhead shark that is more aggressive and large in size: the Great Hammerhead. These sharks tend to be more aggressive and eat squid, octopus, and other hammerhead sharks. They are also known to eat their own young.[14]
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