1. Chordata
   Porifera
2. Cnidaria
   Mollusca

The Bengal tiger is one of the largest cats and it belongs to the phylum Chordata. Its natural habitat is the Indian subcontinent and it is considered to be endangered, with its population being just in the thousands.

1. Nemertea
   Loricifera
2. Arthropoda
   Cnidaria

The Queen Alexandra's birdwing that is shown here is a species of butterfly that is classified into the phylum Arthropoda. It is notable for being the largest butterfly in the world.

1. Chordata
   Loricifera
2. Cnidaria
   Porifera

This is the yellow tube sponge, a species of sponge that is a member of the phylum Porifera. It is notably fond in the Gulf of Mexico and the Caribbean Sea.

1. Cnidaria
   Mollusca
2. Chordata
   Echinodermata

The ostrich is a flightless bird that belongs to the phylum Chordata. While it cannot fly, the ostrich is notable for being the largest living bird species.

1. Chordata
   Annelida
2. Cnidaria
   Loricifera

The leech that is shown here is a worm-like animal that is classified into the phylum Annelida. They are notable for their medicinal uses throughout history.

1. Mollusca
   Loricifera
2. Echinodermata
   Chordata

This is the saltwater crocodile, a predatory reptile that is a member of the phylum Chordata. It is notable for being the largest living reptile in the world.

1. Cnidaria
   Arthropoda
2. Echinodermata
   Chordata

The tarantula hawk is a large wasp that belongs to the phylum Arthropoda. They are one of the largest wasps in the world and as their name suggests, they are famous for hunting tarantulas.

1. Arthropoda
   Cnidaria
2. Echinodermata
   Bryozoa

The Goliath beetle that is shown here is an insect that is classified into the phylum Arthropoda. They are one of the largest insects and are named after the biblical giant, Goliath.

1. Echinodermata
   Chordata
2. Cnidaria
   Bryozoa

This is the African bush elephant, a mammal that is a member of the phylum Chordata. Not only is it the largest species of elephant but it is also the largest land animal that is alive today.

1. Echinodermata
   Chordata
2. Arthropoda
   Cnidaria

The lion's mane jellyfish is a species of jellyfish that belongs to the phylum Cnidaria. It is primarily found in cold waters and is notable for being the largest jellyfish.

1. Bryozoa
   Chordata
2. Mollusca
   Porifera

The blue whale that is shown here is a marine mammal that is classified into the phylum Chordata. It is not only the largest living animal but it is also considered to be the largest animal that has ever existed.

1. Cnidaria
   Arthropoda
2. Annelida
   Acanthocephala

This is the staghorn coral, a type of stony coral that is a member of the phylum Cnidaria. It is notable for being one of the most important types of coral in the Great Barrier Reef.

1. Mollusca
   Chordata
2. Arthropoda
   Echinodermata

The giant forest scorpion is the largest species of scorpion and it belongs to the phylum Arthropoda. However, it is not incredibly venomous, instead primarily killing its prey with its pincers.

1. Chordata
   Annelida
2. Arthropoda
   Echinodermata

The ragworm that is shown here is a part of a large family of worms that is classified into the phylum Annelida. They are often used as bait or as fish feed.

1. Annelida
   Porifera
2. Arthropoda
   Mollusca

This is the fire ant, a small insect that is a member of the phylum Arthropoda. As their name suggests, they are most notable for their painful sting.

1. Chordata
   Ctenophora
2. Acanthocephala
   Mollusca

The cuttlefish is a marine animal that belongs to the phylum Mollusca. They are a delicacy in East Asia and parts of the Mediterranean.

1. Ctenophora
   Annelida
2. Arthropoda
   Mollusca

The American lobster that is shown here is a species of lobster that is classified into the phylum Arthropoda. It is notable for being the heaviest member of its phylum.

1. Mollusca
   Gastrotricha
2. Arthropoda
   Annelida

This is the giant African snail, a land snail that is a member of the phylum Mollusca. It is one of the largest land snail species in the world.

1. Porifera
   Cnidaria
2. Arthropoda
   Annelida

The earthworm is a tube-shaped invertebrate that belongs to the phylum Annelida. They are “blind” in the traditional sense, with no eyes but instead having specialized photosensitive cells.

1. Mollusca
   Entoprocta
2. Arthropoda
   Cnidaria

The octopus that is shown here is an eight-limbed animal that is classified into the phylum Mollusca. While their appearance may be deceiving, octopuses are actually extremely intelligent, being one of the smartest animals that are alive today.

1. Mollusca
   Entoprocta
2. Chordata
   Cnidaria

This is the brain coral, an aquatic animal that is a member of the phylum Cnidaria. It gets its name from the distinct series of ridges on its surface that give it the appearance of an actual brain.

1. Entoprocta
   Arthropoda
2. Cnidaria
   Annelida

The tarantula is a family of large spiders that belongs to the phylum Arthropoda. They are notable for being skilled hunters and they are often kept as exotic pets.

1. Arthropoda
   Cnidaria
2. Chordata
   Porifera

The stove-pipe sponge that is shown here is a marine animal that is classified into the phylum Porifera. They can primarily be found in areas of the Western Atlantic Ocean.

1. Porifera
   Mollusca
2. Echinodermata
   Arthropoda

This is the garden snail, a species of land snail that is a member of the phylum Mollusca. They are relatively common and often regarded as an agricultural pest.

1. Cnidaria
   Phoronida
2. Chordata
   Mollusca

The stalked jellyfish is a cold-water loving creature that belongs to the phylum Cnidaria. They are notable for actually being the only members of the class Staurozoa that are alive today.

1. Chordata
   Echinodermata
2. Mollusca
   Arthropoda

The Australian trumpet that is shown here is a large sea snail that is classified into the phylum Mollusca. Their large shells are highly sought after by collectors.

1. Arthropoda
   Phoronida
2. Echinodermata
   Annelida

This is the sea cucumber, a marine animal that is a member of the phylum Echinodermata. The name comes from their close resemblance to the fruit of the cucumber plant.

1. Cnidaria
   Echinodermata
2. Chordata
   Arthropoda

The sea urchin is a spine aquatic animal that belongs to the phylum Echinodermata. They are notable for being found at a wide range of depths throughout the ocean.

1. Cnidaria
   Phoronida
2. Chordata
   Arthropoda

The Portuguese man o' war that is shown here is a marine animal that is classified into the phylum Cnidaria. Each year, they sting more than 10,000 people in Australian waters alone.

1. Annelida
   Cnidaria
2. Porifera
   Chordata

This is the pink vase sponge, a species of demosponge that is a member of the phylum Porifera. While their name suggests one specific color, they can be found in the wild as gray, blue, and any shade between purple and pink.

1. Mollusca
   Arthropoda
2. Echinodermata
   Cnidaria

The coconut crab is a species of land dwelling crab that belongs to the phylum Arthropoda. It is notable for actually being the largest land dwelling member of its phylum.

1. Annelida
   Cnidaria
2. Porifera
   Chordata

The cheetah that is shown here is a slender big cat that is classified into the phylum Chordata. It is notable for holding the title of “fastest land animal."

1. Chordata
   Porifera
2. Cnidaria
   Arthropoda

This is the sea anemone, a marine animal that is a member of the phylum Cnidaria. Their name is derived from the anemone, a flowering plant that is also notable for its varied colorful appearance.

1. Arthropoda
   Echinodermata
2. Hemichordata
   Chordata

Humans are a species of mammals that belongs to the phylum Chordata. The most intelligent species of animal in the world; the only ones to rely heavily on complex tools and form intricate multifaceted societies.

1. Hemichordata
   Echinodermata
2. Mollusca
   Chordata

The sea lily that is shown here is a marine animal that is classified into the phylum Echinodermata. The name “sea lily” is primarily used to refer to the adult form of the organism.

1. Mollusca
   Arthropoda
2. Annelida
   Chordata

This is the coyote, a canine that is a member of the phylum Chordata. They are notable for currently only being native to the North American continent.

1. Echinodermata
   Annelida
2. Mollusca
   Chordata

The starfish is a marine animal that belongs to the phylum Echinodermata. While there are commonly depicted as having five “limbs” or “arms,” there are several species of starfish that have more.

1. Arthropoda
   Porifera
2. Cnidaria
   Hemichordata

The sea wasp that is shown here is a marine animal that is classified into the phylum Cnidaria. This species of jellyfish is extremely venomous, being responsible for dozens of known deaths over the years.

1. Cnidaria
   Cycliophora
2. Arthropoda
   Bryozoa

This is the dragon eye zoanthid, a marine animal that is a member of the phylum Cnidaria. They are popular among aquarium owners and fishkeepers, due to their attractive coloration.

1. Bryozoa
   Cnidaria
2. Mollusca
   Chordata

The colossal squid is a marine animal that belongs to the phylum Mollusca. It is not only the largest species of squid but also the largest known invertebrate.