Elysia ornata is a species of sea slug, a marine gastropod mollusk. This sea slug superficially resembles a nudibranch, yet it does not belong to that suborder of gastropods. Instead it is a member of the closely related clade Sacoglossa, the "sap-sucking" sea slugs.

Chromis chromis is a Chromis from the Eastern Atlantic and Mediterranean. It occasionally makes its way into the aquarium trade. It grows to a size of 25cm in length. It feeds on small planktonic animals, and Benthic Algae. Adults form small shoals in midwater above or near rocky reefs or above seagrass meadows.

Chromodoris annulata is a large smooth pale-bodied nudibranch with many vivid yellow spots, though these may be absent in some individuals. It has one purple ring around the gills and another ring around the rhinophores. The mantle usually has a purple border. It may grow to 100mm in total length. The gills are triangular in cross-section.

The Ctenophora (commonly known as comb jellies) are a phylum of animals that live in marine waters worldwide. Their most distinctive feature is the "combs", groups of cilia they use for swimming, and they are the largest animals that swim by means of cilia - adults of various species range from a few millimeters to 1.5 meters (59 in) in size. Like cnidarians, their bodies consist of a mass of jelly, with one layer of cells on the outside and another lining the internal cavity. In ctenophores, these layers are two cells deep, while those in cnidarians are only one cell deep. Ctenophores also resemble cnidarians in having a decentralized nerve net rather than a brain. Some authors combined ctenophores and cnidarians in one phylum, Coelenterata, as both groups rely on water flow through the body cavity for both digestion and respiration. Increasing awareness of the differences persuaded more recent authors to classify them in separate phyla

The dusky shark (Carcharhinus obscurus) is a species of requiem shark, in the family Carcharhinidae, occurring in tropical and warm-temperate continental seas worldwide. A generalist apex predator, the dusky shark can be found from the coast to the outer continental shelf and adjacent pelagic waters, and has been recorded from a depth of 400 m (1,300 ft). Populations migrate seasonally towards the poles in the summer and towards the equator in the winter, traveling hundreds to thousands of kilometers. One of the largest members of its genus, the dusky shark reaches 4.2 m (14 ft) in length and 347 kg (765 lb) in weight. It has a slender, streamlined body and can be identified by its short round snout, long sickle-shaped pectoral fins, ridge between the first and second dorsal fins, and faintly marked fins.

European Common Cuttlefish (Sepia officinalis)

Flabellina is a genus of sea slugs, specifically aeolid nudibranchs. These animals are marine gastropod molluscs in the family Flabellinidae

Sea horse Images (Hippocampus Hippocampus)

Hermit crabs are decapod crustaceans of the superfamily Paguroidea. Most of the 1100 species possess an asymmetrical abdomen which is concealed in an empty gastropod shell that is carried around by the hermit crab.

Cuttlefish are marine animals of the order Sepiida. They belong to the class Cephalopoda (which also includes squid, octopuses, and nautiluses). Despite their name, cuttlefish are not fish but molluscs. Cuttlefish have an internal shell (the cuttlebone), large W-shaped pupils, and eight arms and two tentacles furnished with denticulated suckers, with which they secure their prey. They generally range in size from 15 cm (5.9 in) to 25 cm (9.8 in), with the largest species, Sepia apama, reaching 50 cm (20 in) in mantle length and over 10.5 kg (23 lb) in weight. Cuttlefish eat small molluscs, crabs, shrimp, fish, octopuses, worms, and other cuttlefish. Their predators include dolphins, sharks, fish, seals, seabirds and other cuttlefish. Their life expectancy is about one to two years. Recent studies indicate that cuttlefish are among the most intelligent invertebrates. Cuttlefish also have one of the largest brain-to-body size ratios of all invertebrates. The 'cuttle' in 'cuttlefish' comes from the Old English word cudele, meaning 'cuttlefish', which may be cognate with the Old Norse koddi ('cushion', 'testicle') and the Middle Low German küdel ('pouch').[citation needed] The Greco-Roman world valued the cephalopod as a source of the unique brown pigment that the creature releases from its siphon when it is alarmed. The word for it in both Greek and Latin, sepia, is now used to refer to a brown pigment in English.

Portunus pelagicus, also known as the flower crab, blue crab, blue swimmer crab, blue manna crab or sand crab, is a large crab found in the intertidal estuaries of the Indian and Pacific Oceans (Asian coasts) and the Middle-Eastern coast of the Mediterranean Sea.

A large and stinging jellyfish species first appearing in the mid-seventies became increasingly common off the coast of Israel during the past decade. Galil et al. (1990) identified this jellyfish as a new scyphomedusan species - Rhopilema nomadica (order Rhizostomeae)- with an indopacific origin.

The round fantail stingray or round stingray, Taeniura grabata, is a poorly known species of stingray in the family Dasyatidae. It inhabits sandy, muddy, or rocky coastal habitats in the eastern Atlantic Ocean and the southern Mediterranean Sea. This dark-colored ray typically reaches a width of 1 m (3.3 ft), and can be identified by its nearly circular pectoral fin disk, short tail, and mostly bare skin. The round fantail stingray hunts for fishes and crustaceans on the sea floor, and exhibits an aplacental viviparous mode of reproduction. The International Union for Conservation of Nature (IUCN) does not yet have sufficient information to assess the conservation status of this species.

sarocentron rubrum- Found in coastal reefs ; silty reefs or wrecks in lagoons, bays, or harbors , may occur in aggregations; also found hidden in caves and cracks of rocks during the day , usually in areas subject to strong currents . Feed mainly on benthic crabs and shrimps , also preys on small fishes . Eggs and larvae are pelagic . Spine of preopercle venomous

Stephanolepis diaspros Fraser-Brunner,1940 Diagnosis: dorsal finrays I + 30-33; anal finrays 30-33. Colour: grey-brown or greenish, with brown spots and lines; adults with pale lines on sides, enclosing dark lozenge-shaped areas; caudal with 2 dark bands. Size: about 25 cm SL. Distribution: immigrated through Suez Canal into eastern and central Mediterranean, reaching Tunis and southern Italy. Elsewhere, Red Sea ; and Arabian Gulf.

Striped eel-plotosus lineatus