Composite structure of silken threads and a proteinaceous hydrogel which form the diving bell wall of the water spider Agyroneta aquatica

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Table 1 Components of sheet-webs and diving bells

Type	Colour	Thickness	Properties	See
Single threads	blue	variable	crossing each other	Figure 1 F-H
Flat bundles	blue	200–400 μm	crossing other strips, with single threads Ø < 1μm	Figure 1 G, Figure 1 E-G
Gel-like mass	bluish	homogenous	embedding all threads	Figure 1 F-H