So thinks the researcher in the second link.
Hagfish are primitive, eel-like fish that are nearly blind and lack jaws or true vertebrae, but they have the unnerving capability of producing copious amounts of slime when disturbed....
.... Unlike the mucous produced by the membranes of humans and other animals, which become more rigid, viscous gels at and below ambient body temperatures, the researchers (Gavin Braithwaite, 617-629-4400, email@example.com; Douglas Fudge, firstname.lastname@example.org) found that Hagfish slime is much less elastic, even at high concentrations, than its human counterpart.
In addition, over the ranges of temperatures encountered by the hagfish, the gel strength is relatively temperature independent. The insensitivity to temperature perhaps ensures that slime is an effective defense in a variety of conditions. In addition, artificial materials that mimic Hagfish slime chemistry might make good space-filling gels.
Hagfish slime is unlike other slimy secretions in that it is reinforced with very fine fibres. Our data show that these fibres lend tensile strength and toughness to the slime. Subsequent research will investigate the mechanical properties of the mucus component of the slime, as well as the properties of naturally-produced slime cocoons.
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