http://www.discountdivers.com/fx/abysskevlar.html

It would probably be just as effective against drunken spearos.

Probably not... I seem to remember reading a story about one Darwin
Award candidate cop who asked a buddy to stab him with a knife in his
kevlar vest... Now, there are stab resistant vests and such, but I
suspect that to make an entire suit out of one would be rather
bulky... Probably bulkier than chain mail... Of course, one could
consider the chain mail suit just that much less lead that one would
need to carry on their weight belt, right?  About 40 lbs less on your
weight belt, if I remember correctly... <grin>

Of course, that depends upon the chainmail suit... Ones like this
probably don't weigh as much, but also probably don't provide as much
protection...

http://www.apocalypsecreations.ca/graphics/j41bra2LG.jpg
http://www.sblades.com/product_pics/z_amirabik.jpg
http://www.eroticlothing.co.uk/acatalog/big-pp8738.jpg

Hey Chris, perhaps your wife might be interested in one of those...
<dirty-old-man-grin>

Given the bite pressure, would either work very well to do much more
than keep your smashed mangled flesh in one piece and place?  I recall
long ago and far away when I was a laborer in a steel mill we had to
wear steel toed shoes with a metacarpal plate. I remember a foreman
explaining that it just kept all the jelly in one spot when a 25 ton
coil of steel rolled over your foot. You might not have rips and tears
from the teeth but I suspect you might wish that you had.

The problem with any kind of protection suit like that is that sharks
also exert a lot of pressure with their bites.  The teeth may not tear
the skin, but the shattered bone will.

Question why would you need this Shark suit?. Valerie whatshername in Aus
had one years ago and it was really great if you berlied up great whites and
stuck your arms in their mouth. The relevance to the average or even the not
average scuba diver escapes me