Every aspect of vision, from the opsin proteins to the eyes and the ways that they serve
animal behavior, is incredibly diverse. It is only with an evolutionary perspective that this …

Light provides a widely abundant energy source and valuable sensory cue in nature. Most
animals exposed to light have photoreceptor cells and in addition to eyes, there are many …

Serpulidae Rafinesque, 1815 is a speciose group of polychaetes that all inhabit calcareous
tubes. The family was traditionally subdivided into Serpulinae, Filograninae, and …

Sabellida Levinsen, 1883 is a large morphologically uniform group of sedentary annelids
commonly known as fanworms. These annelids live in tubes made either of calcareous …

Some coral-associated invertebrates are known for the negative impact they have on the
health of their hosts. During biodiversity surveys on the coral reefs of Curaçao and a study of …

For centuries, the eye has fascinated scientists and philosophers alike, and as a result the
visual system has always been at the forefront of integrating cutting-edge technology in …

Annelids (the segmented worms) exist in a remarkably diverse range of mostly marine but
also freshwater and terrestrial habitats, varying greatly in size and form. Annelida provides a …

Arthropods typically possess two types of eyes—compound eyes, and the ocellar, so
called'median eyes'. Only trilobites, an important group of arthropods during the Palaeozoic …

Across eumetazoans, the ability to perceive and respond to visual stimuli is largely mediated
by opsins, a family of proteins belonging to the G protein-coupled receptor (GPCR) …

Many sea urchins can detect light on their body surface and some species are reported to
possess image-resolving vision. Here, we measure the spatial resolution of vision in the …