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hammerhead shark interpreter needed

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swedeheart | 22:26 Tue 08th Dec 2009 | Animals & Nature
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Could somebody please help me make sense of this sentence; it's from a Wikipedia entry about hammerhead sharks. English isn't my first language and I just don't get it: "Hammerheads are one of the most negatively buoyant of sharks."



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Q: How do sharks and rays control their buoyancy without a swim-bladder?

In a 1986 paper published in the Journal of Fish Biology, it was proposed that negatively buoyant fishes (i.e. those that would sink without some buoyancy aid) may adopt a positive body tilt (i.e. nose up, tail down) during steady swimming to increase total lift.


Hope the link helps. Apparently hammerheads don't have a bladder to fill with gas to help them float but have large livers filled with a special oil to increase buoyancy instead,
Question Author
! Well whuddayaknow. I considered that that might be what 'negatively buoyant' meant but I thought I must be wrong. My other hypotheses were 'uncheerful', or 'cheerful to a fault' - but I discarded those as well ha ha. Thanks a lot, carrot99. Nice article, I loved the fart shark described towards the end of the text. And the piccy Thanks!
If English isn't your first language, then I congratulate you on your command of it...-G-
Question Author
Thanks greenrook, that's very nice of you. Most Swedes are able to express themselves in English, passably. Our television airs a lot of English and American series and films. Having said that... I still use dictionaries an awful lot. /Thanks!
In many cases, Europeans speak our language far better than our youth of today. I often have difficulty understanding my own sons.

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