Rockpool Prawn

Palaemon elegans

Palaemon elegans sometimes known by the common name rockpool shrimp, is a species of shrimp of the family Palaemonidae. It is native to the eastern North Atlantic (including Macaronesia), the Baltic, the Mediterranean and the Black Sea, and introduced in the Caspian and Aral seas.
Palaemon elegans  Geotagged,Grass Prawn,Palaemon elegans,Spain

Appearance

Palaemon elegans is a typical prawn with a cylindrical body composed of a carapace at the front and six abdominal segments. It has a short straight rostrum in front of the eyes with distinctive dorsal and ventral teeth. Palaemon elegans is translucent with red/brown lines on the carapace and abdomen. Just below the large compound eye on each side is the antennule, which is divided into to three parts. Below the antennule is the antenna, which is divided into two parts; the short flat segment (the scaphocerite) and the long whip-like flagellum. The first two pairs of walking legs bear claws (chela) and have yellow and red banding.Palaemon elegans is very similar to Palaemon serratus, Palaemon longirostris and Palaemon adspersus but can be separated from these species by the number of rostral teeth and the mandibular palp, which is composed of two segments.

References:

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http://eol.org/pages/1021076/overview
Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassMalacostraca
OrderDecapoda
FamilyPalaemonidae
GenusPalaemon
SpeciesPalaemon elegans