The Ocean
Invertebrates
Vertabrates
Marine Mammals
Marine Reptiles
100

The ocean is divided into these levels based on depth.

What are oceanic zones?

100

This is the characteristic that classifies animals into this category.

What are animals without a backbone?

100

Unlike its cousins on land, this marine reptile has flippers instead of claws and cannot pull inside its shell.

What is a sea turtle?

100

One way to tell seals and sea lions apart is by their ears. This one has visible ear flaps.

What is a sea lion?

100

They bask in the sun to warm up.

How do marine iguanas regulate their body temperature?

200

The brightest of the ocean zones.

What is the sunlight zone? (or epipelagic zone)

200

Jellyfish, coral, and sea anemones are classified in this phylum.

What is cnidarians?

200

This marine vertebrate has scales and fins, but no eyelids.

What is a fish?

200

Pinnipeds (like sea lions, seals, and walruses) have this to keep them warm.

What is blubber?

200

This animal excretes excess salt through modified tear glands in their eyes  


What are Sea Turtles?

300

This is the common name for the mesopelagic zone, where sun dimly reaches.

What is the twilight zone?

300

Echinoderms, with their spiny skeleton, include sea cucumbers, sea urchins, sand dollars, and this - not a fish and not part of a constellation!

What is a star fish? (Or sea star)

300

This special kind of fish has an excellent sense of smell and hearing!

What is a shark?

300

Animals like the sea otter and polar bear in carnivora have this in addition to blubber to keep them warm.

What is fur?
300

This animal mimics the appearance of the sea crate to avoid predators

What is the banded snake eel?

400

This zone is a great place to find seashells.

What is the intertidal zone?

400

This cephalopod does not have an internal shell, like its cousins, the squid and cuttlefish.

What is an octopus?

400

Instead of bones, sharks have this.

What is cartilage?

400

These mammals are part of cetaceans. 

Any of these:

What are dolphins / whales / porpoises ?

400

Adult female sea turtles use this to navigate thousands of miles back to their hatching sites.

What are biological compasses?

500

How much of the Earth is covered in oceans?

Approximately 71%

500

They have bodies full of tiny holes called ostia.

What is a Sponge?

500

The average number of gills on a fish.

What is 5 gills? (Between 4-7)

500

This kind of whale has 2 blowholes and no teeth as the toothed whales do.

What are baleen whales?

500

This marine reptile has highly sensitive ears that allow it to hear their hatchlings.

What is the saltwater crocodile?

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