Strongylocentrotus
Animalia
Echinoderms
Purpuratus
Small fish
Other sea urchins
Algae
Sea cucumbers
Mouth
Spine
Feet
Nose
Both intertidal area and subtidal areas
On the beach
Intertidal area only
Subtidal area only
Toothpick
Pentamerous
Dome
Porcupine
Because sea urchins have large numbers of eggs
Because the eggs make great omlettes
Because sea urchins have large numbers of relatively big eggs
Because a sea urchin's egg is relatively big