Related how?

Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Chordata (Chordates)
Olfactores
Craniata (Craniata (chordata))
Vertebrata (Animals with backbone)
Gnathostomata (Gnathostome)
Eugnathostomata
Teleostomi
Euteleostomi
Sarcopterygii (Lobe-finned fishes)
Dipnotetrapodomorpha
Tetrapodomorpha (Tetrapodomorph)
Tetrapoda (Tetrapod)
Reptiliomorpha
Amniota (Amniote)
Sauropsida
Reptilia (Reptiles)
Eureptilia
Romeriida
Diapsid (Diapsida)
Neodiapsida
Sauria
Lepidosauromorpha (Lepidosauromorph)
Lepidosauria
Squamata (Scaled reptiles)
Episquamata
Toxicofera
Ophidia
Serpentes (Snake)
Alethinophidia
Caenophidia (Caenophidian)
Elapidae

Hydrophiinae (460286)

Children (18 direct children, 128 direct and indirect children):

Aipysurus (tree size 12)
Olive sea snakes

Chitulia (tree size 3)

Disteira (tree size 3)

Enhydrina (tree size 2)
Beaked sea snakes

Emydocephalus (tree size 4)
Turtlehead sea snakes

Hydrophis (tree size 60)

Microcephalophis (tree size 2)

Astrotia (tree size 1)

Thalassophina (tree size 1)

Kerilia (tree size 2)

Pelamis (tree size 1)

Polyodontognathus (tree size 1)

Praescutata (tree size 1)

Platurus (tree size 1)

Smithsohydrophis (tree size 3)

Distira (tree size 2)

Hydrus (tree size 9)

Platurus (tree size 2)