Invertebrates

Invertebrates lack a backbone (i.e. dorsal spine) and usually display interesting survival strategies. Giant-green-anemones have photosynthetic algae in them and, much like other anemones, their tentacles are armed with poisonous cells.

Did you know that those innocent look sea-stars can force a bivalve shell open with their powerful arms? And how about those sea-urchins, which avoid excess light by covering themselves with rocks and shells? Both sea-stars and sea-urchins are voracious predators.

Sea-stars, sea-urchins and sea-cucumbers
False ochre star (Evasterias troschelii - Asteroidea)

Giant red sea urchin (Strongylocentrotus franciscanus - Strongylocentrotidae)

Giant spined star (Pisaster giganteus - Asteriidae)

Ochre Sea Star, purple sea star (Pisaster ochraceus - Asteroidea)

Purple sea urchin (Strongylocentrotus purpuratus - Strongylocentrotidae)

Redbanded sea-star (Orthasterias koehleri - Asteriidae)

Anemones, corals and jellyfish
Cloning anemone, aggregating anemone (Anthopleura elegantissima - Actiniidae)

Fish-eating anemone (Urticina piscivora - Actiniidae)

Giant green anemone (Anthopleura xanthogrammica - Actiniidae)

Plumose anemone (Metridium senile - Metridiidae)

White-spotted rose anemone (Urticina lofotensis - Actiniidae)