Classifying and Comparing

 

The Booby

 

Kingdom: Animalia

Phylum: Chordata
Class: Aves
Order: Suliformes
Family: Sulidae
Genus: Sula
Species: nebouxii

The Squidworm

Kingdom: Animalia
Phylum: Annelida
Class: Polychaeta
Order: Canalipalpata
Family: Acrocirridae
Genus: Tenthidodrilus
Species: T.Samae

Christmas Tree Worm

Kingdom: Animalia
Phylum: Annelida
Class: Polychaeta
Order: Canalipalpata
Family: Serpulidae
Genus: Spirobranchus
Species:Giganteus

Blobfish

Kingdom: Animalia
Phylum: Chrodata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Psychrolutidae
Genus: Psychrolutes
Species: Marcidus

Marabou Stork

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Ciconiiformes
Family: Ciconiidae
Genus: Leptoptilos
Species: L.crumenifer

Obviously all the organism I chose share the same kingdom as belonging to the kingdom Animalia. The Booby, the Marabou Stork, and the Blobfish all belong to the Chordata phylum (Same as Humans!) The Marabou Stork and the Booby also share the Aves Class. The Squidworm and the Christmas Tree worm share the same Kingdom, Phylum, Class, and Order.

Just by looking at pictures, I can see that the Squidworm and the Christmas Tree worm are closely related, but I did not expect them to be so closely related as to share 4 out of 7 classes. The marabou Stork and the blue footed booby also look related as they are both birds.

I did not expect the blobfish to share anything other than Kingdom, but it shares the same Phylum as the booby and the marabou stork.

Questions: How can one member of a species (the Spirobranchus giganteus) look so different from each other? (colour wise and shape wise, when other species look almost identical)
How does the blobfish swim?