A selection of species and scenes recorded whilst snorkelling from Santa Marina, Salina in June 2018.

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Arbacia lixula (Linnaeus, 1758), the black sea urchin.

Astroides calycularis (Pallas, 1766), an orange cup coral (but what's that hiding beneath?).

Astroides calycularis (Pallas, 1766), an orange colonial stony cup coral.

Hermodice carunculata (Pallas, 1766), the bearded fireworm.

Hermodice carunculata (Pallas, 1766), the bearded fireworm (close-up of the head).

Currently unidentified egg ribbon, most likely from a sea-slug.

Octopus vulgaris Cuvier, 1797, the common octopus (in less than 1m depth of water).

Octopus vulgaris Cuvier, 1797, the common octopus.

Octopus vulgaris Cuvier, 1797, the common octopus.

Octopus vulgaris Cuvier, 1797, the common octopus.

Octopus vulgaris Cuvier, 1797, the common octopus.

Octopus vulgaris Cuvier, 1797, the common octopus.

Ophidiaster ophidianus (Lamarck, 1816), la stella serpente.

Pachygrapsus marmoratus (Fabricius, 1787), the marbled rock crab.

Palaemon elegans Rathke, 1837, the grass prawn or, gamberetto.

Palaemon elegans Rathke, 1837, the grass prawn or, gamberetto.

Palaemon elegans Rathke, 1837, the grass prawn or, gamberetto.

Palaemon elegans Rathke, 1837, the grass prawn or, gamberetto (habitat context, water depth <1m).

Parablennius spp. Miranda Ribeiro, 1915, one of the comb tooth blennies.

Percnon gibbesi (H. Milne Edwards, 1853), the Sally lightfoot crab.

Percnon gibbesi (H. Milne Edwards, 1853), the Sally lightfoot crab.

Serranus cabrilla (Linnaeus, 1758), the comber.

Serranus cabrilla (Linnaeus, 1758), like other fish in the shallow surf these will come close looking for food.

Tripterygion Risso, 1827, one of the triplefin blennies (possible species identified but awaiting confirmation).

Tripterygion Risso, 1827, one of the triplefin blennies.

Tripterygion Risso, 1827, one of the triplefin blennies.

Thalassoma pavo (Linnaeus, 1758), ornate wrasse in one of the rock barriers protecting the seafront.

A thin fringe of Posidonia oceanica (Linnaeus) Delile, 1813 hugging the drop-off.

One of the vessels which delivers drinking water to the islands.

Bothus podas (Delaroche, 1809), the wide-eyed flounder.

Bothus podas (Delaroche, 1809), the wide-eyed flounder and the broader habitat at the location.

Hermodice carunculata (Pallas, 1766), the bearded fireworm.

Muraena helena Linnaeus, 1758, the Mediterranean moray eel.

Octopus vulgaris Cuvier, 1797, the common octopus with attendant ornate wrasse.

Octopus vulgaris Cuvier, 1797, the common octopus.

Octopus vulgaris Cuvier, 1797, the common octopus.

Paracentrotus lividus (Lamarck, 1816), the rock sea urchin.

Pelagia noctiluca (Forsskål, 1775), the mauve stinger.

Pinna nobilis Linnaeus, 1758, fan mussel.

Sphaerechinus granularis (Lamarck, 1816), the purple sea urchin.

Tripterygion Risso, 1827, one of the triplefin blennies (male and female).