Page 177 - Ultimate Visual Dictionary (DK)

STARFISH AND SEA URCHINS

EXAMPLES OF SEA URCHINS
Tube foot

EDIBLE SEA URCHIN CALIFORNIAN PURPLE PENCIL SLATE SEA
INTERNAL ANATOMY (Echinus escelentus) SEA URCHIN URCHIN
OF A SEA URCHIN (Strongylocentrotus (Heterocentrotus
Gonopore Anus Madreporite purpuratus) mammillatus)

Genital plate
EXTERNAL FEATURES OF A
Intestine SEA URCHIN (UPPER, OR
Gonad ABORAL, SURFACE)
Stone canal
Axial gland Anus
Ring canal
Siphon
Polian vesicle
Test Spine
Pharynx Spine
Nerve ring
Radial nerve Mouth
Tube foot
Radial canal

Ampulla

Tube foot

CUSHION STAR
(Asterina gibbosa)
COMMON BRITTLE STAR
(Ophiothix fragilis)
Tube foot

EXAMPLES OF
STARFISH
Mouth

Ambulacral groove

COMMON STARFISH EXTERNAL FEATURES OF A STARFISH
(Asterias rubens) (LOWER, OR ORAL, SURFACE)