  Eta Carinae is one of the most extreme cases of a Luminous Blue Variable
star. A bipolar nebula of 17" size surrounds the central object. Even further
out, a large amount of filamentary material extends to a distance of 30" or
about 0.3 pc. In this paper we present a detailed kinematic and morphological
analysis of some outer filaments in this nebula which we call strings. All
strings are extremly long and narrow structures. We identified 5 strings which
have sizes of 0.058 to 0.177 pc in length and a width of only 0.002 pc. Using
high-resolution long-slit echelle spectroscopy it was found that the strings
follow a Hubble law with velocities increasing towards larger distances from
the star. With these unique properties, high collimation and linear increase of
the radial velocity the strings represent a newly found phenomena in the
structure and evolution of nebulae around LBVs. Finally, we show that
morphologically similar strings can be found in the planetary nebula NGC 6543,
a possible PN-counterpart to this phenomenon.
