How does this small brown crescent-headed land planarian(?) "look around" and sense its envirnoment?
Given that &quot;hammerhead worms&quot; are Bipaliinae, I expect you can find your species from this bibliography1.  Bipalium or Diversibipalium ruteofulvum and cosmopolitan Bipalium kewense are mentioned, but I did not find images of these species online just now.
A paper about the sense organs of B. kewense (Abdel-Haleem, 2014) mentions many small pigment cup eyespots, as well as papillae and pits that may be chemosensory in nature.

1Kawakatsu et al. 2004 An Annotated Bibliography of Taiwan Land Planarians, with Lists of Linked Papers on This Animal Group