Florent's Guide To The

Tropical Reefs

East Pacific Slate Pencil Urchin
East Pacific Slate Pencil Urchin
Scientific Name: Eucidaris thouarsii
Class: Echinoidea
Category: Sea Urchins
Size: Up to 6 in. (15 cm)  
Depth: 3-200 ft. (1-60 m)
Distribution: Gulf of California, Pacific Coast of Mexico to Panama

Invertebrates
Echinoderms
Sea Urchins

East Pacific Slate Pencil Urchin

Variegated Urchin

West Indian Sea Egg

White Sea Urchin

Collector Urchin

Flower Urchin

Rose Flower Urchin

Bell's Sea Urchin (Juvenile)

Pebble Collector Urchin

Rock-Boring Urchin

Reef Urchin

Pale Rock-Boring Urchin

Oblong Sea Urchin

Needle-spined Urchin

Red Heart Urchin

Longspine Heart Urchin

Shingle Sea Urchin

Long-Spined Urchin

Savignyi's Longspine Urchin

Black Longspine Urchin

Banded Urchin

Variable Fire Urchin

Radiant Sea Urchin

Radiant Sea Urchin (Juvenile)

Blue-Black Urchin

Red Slate Pencil Urchin

Rough-Spined Urchin

Slate Pencil Urchin

Feather Stars
Brittle Stars
Sea Stars
Sea Cucumbers
Basket Stars


All Photographs
© 2020 Florent Charpin