Plains Like Agulhas Plain

Brazil Basin

Plain

4.40 Poor

Angola Basin

Plain

3.94 Poor

Cape Abyssal Plain

Plain

3.85 Poor

Central Pacific Basin

Plain

4.58 Poor

North American Basin

Plain

4.40 Poor

Bay of Bengal Abyssal Plain

Plain

4.21 Poor

Hatteras Abyssal Plain

Plain

4.16 Poor

Aleutian Basin

Plain

4.14 Poor

Sohm Abyssal Plain

Plain

4.12 Poor

Tasman Abyssal Plain

Plain

3.94 Poor

Iberian Abyssal Plain

Plain

3.94 Poor

Venezuela Basin

Plain

3.85 Poor

Canary Basin

Plain

3.85 Poor

Graneledone boreopacifica

Octopus

8.91 Great

Red River Valley (North Dakota)

Plain

7.75 Good

Echinosigra phiale

Sea Urchin

7.21 Good

Tromikosoma hispidum

Sea Urchin

7.09 Good

Bathypolypus arcticus

Octopus

7.09 Good

Sperosoma giganteum

Sea Urchin

7.05 Good

Dumbo Octopus (Grimpoteuthis bathynectes)

Octopus

7.02 Good

Promachoteuthis sulcus

Squid

6.90 Fair

Graneledone verrucosa

Octopus

6.89 Fair

Pourtalesia wandeli

Sea Urchin

6.83 Fair

Calveria hystrix

Sea Urchin

6.78 Fair