OK .... this is just "What The" weird

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SUMMARY

The discussion centers around the anchor worm (ancora navalis), a lesser-known species closely related to the naval shipworm. Unlike its edible counterpart, the anchor worm feeds on iron and poses a risk to ships by potentially causing anchors to detach during voyages. The conversation also touches on developmental anomalies in zebrafish, specifically instances of head doubling, which can occur due to perturbations during embryogenesis. Participants share personal anecdotes related to unusual animal traits, such as a two-headed snake.

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davenn
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far out !

 
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This is the widely unknown anchor worm (ancora navalis). It is a close relative of the more famous naval shipworm. Other than its brother, which usually lives from wooden bodies of ships, and which is by the a way very delicious food in north eastern Brasil, the anchor shipworm is specialized to anchor chains, which might be equally dangerous to the safety of a ship, for it can cause the anchor to drop off at any time of the journey. The anchor shipworm cannot be eaten, due to his iron based diet. However there are indigenous people, who use it for a kind of tea for pregnant women.
 
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I renamed it the Hammerhead Worm!

edit: I just read the wiki lol
 
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When I was a kid in grade school, our teacher brought in a two headed snake her son bred. It was cool as heck.
 
davenn said:
far out !
Indeed.
 
Kevin McHugh said:
When I was a kid in grade school, our teacher brought in a two headed snake her son bred. It was cool as heck.

While working in zebrafish labs for many years, it was not uncommon to find embryos (among the hundreds of thousands we looked at) with various extents of head doubling. They don't usually survive too long after embryogenesis.
The body plan of zebrafish (and all vertebrates develops from the head (first) to the tail (last). Frequently perturbations of development can cause development to start in two neighboring places (in Xenopus frogs, this can be done by rolling the developing embryo in a certain way at a certain time in development), forming two heads, and then merge together further down the body axis, resulting in a single body with two heads.

Here are some pictures of doubled zebrafish heads as well as some other vertebrates.
 
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Kevin McHugh said:
When I was a kid in grade school, our teacher brought in a two headed snake her son bred.
This is why we have laws against incest. ?:)
 
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