Big galaxy with long arms

This galaxy seems to have very long “arms”. Also looks like two galaxies are very close to each others.

http://legacysurvey.org/viewer?ra=122.8071&dec=25.2054&zoom=13&layer=decals-dr2

Nice! That’s NGC 2535, and the other one is NGC 2536, both at redshift about z=0.014 and probably interacting. That big long arm with blue star formation is typical of when two galaxies collide.