Mozambique • Echinodermata

The identifications were only made on the basis of the photographs which is very hazardous for most of the species. As a consequence the Latin names might not be accurate.
The books used for the identification are listed: bibliography.

Echinoderms are exclusively marine, they seem to be a monophyletic group characterised by a fivefold radial symetry, an internal skeleton and an internal water vascular system. They can be split in five groups:
• Crinoidea, feather stars, about 600 species.
Holothuroidea, sea cucumbers about 1,000 species.
Echinoidea,sea urchins & sand dollars, about 1,000 species.
Ophiuroidea, brittle stars & basket stars, about 1,500 species.
Asteroidea,starfish, about 1,500 species.

Click on the pictures to get a closer view


ECHINODERMATA, Holothuroidea, sea cucumbers
Synapta maculata
Synaptidae
Synapta maculata (Chamisso & Eysenhardt, 1821)
Synapta maculata
Synaptidae
Synapta maculata (Chamisso & Eysenhardt, 1821)
Bohadschia graeffei
Holothuriidae
Bohadschia graeffei (Semper,1868)

ECHINODERMATA, Echinoidea, sea urchins and sand dollars
Cidaridae
Cidaridae
Prionocidaris
Prionocidaris
Cidaridae
Prionocidaris sp.
Cidaridae
Prionocidaris sp.
Astropyga radiata
Diadematidae
Astropyga radiata (Leske, 1778)
Astropyga radiata
Diadematidae
Astropyga radiata (Leske, 1778)
Diadema savignyi
Diadematidae
Diadema cf. setosum (Leske, 1778)
Microcyphus rousseaui
Temnopleuridae
Microcyphus rousseaui Agassiz & Desor, 1846
Tripneustes
Toxopneustidae
Tripneustes sp.
Toxopneustes pileolus
Toxopneustes pileolus
Toxopneustes pileolus
Toxopneustes pileolus
Toxopneustidae, Toxopneustes pileolus (Lamarck, 1816)
Never touch this magnificent sea urchin, it's supposed to be letal for human although I've done it and nothing happen...
I found this specimen in very shallow water, on flat rocks. As it's figured on the first photo, it hid itself using small stones, dead shells...
Toxopneustes pileolus
Toxopneustidae
Toxopneustes pileolus (Lamarck, 1816)
Maretia
Atelostomata, irregular urchins
Cf. Maretia sp.
ECHINODERMATA, Ophiuroidea, brittle stars

Ophiures are often moving very quickly so I've got trouble to make pictures of them. The only ones I've photos of were living in the bell of the jellyfish: Scyphozoa.

ECHINODERMATA, Asteroidea, starfishes

Linckia
Ophidiasteridae
Linckia sp.
Fromia monilis
Ophidiasteridae
Fromia monilis (Perrier, 1869)
Linckia
Ophidiasteridae
Linckia sp.
Choriaster granulatus
Oreasteridae
Choriaster granulatus Lütken, 1869
Choriaster granulatus
Oreasteridae
Choriaster granulatus Lütken, 1869
Halityle regularis
Halityle regularis
Oreasteridae
cf. Halityle regularis Fisher, 1913

Halityle regularis
Pentaceraster
Pentaceraster
Pentaceraster
Pentaceraster
Pentaceraster
Pentaceraster
Pentaceraster
Oreasteridae
Pentaceraster sp.
Protoreaster lincki
Oreasteridae
Protoreaster lincki (Blainville, 1830)
Protoreaster lincki
Protoreaster lincki (Blainville, 1830) & Linckia sp.
Acanthaster planci
Acanthasteridae
Acanthaster planci (Linnaeus, 1758)

Found on the beach at low tide. Any idea ?
Last update 24/10/06
© Copyright 2006 Sophie Valtat