Ocean Life: Lessons 5 & 6

What is the meaning of the word 'Hybrid'? Hybrid means _________.

• made up of a combination of two or more different things

• something that is always the same

• a type of plant only

• a machine that runs on water only

What does 'Endemic' mean? Endemic means _________.

• when a plant or animal is only found in a specific location

• when a plant or animal is found everywhere in the world

• when a plant or animal is extinct

• when a plant or animal migrates seasonally

Thanks to their awkward shape, these creatures don’t really swim that well in spite of being classified as fish. Their stiff, upright bodies have a dorsal fin that runs along their backs, and it is the only thing that they use to move ever . . . so . . . slowly. This little fin has to flutter pretty quickly at around 30–70 times per second (which is almost as fast as a hummingbird’s wings) in order to advance them about 1.6 yards (1.5 m) per hour, which is even slower than a snail! How fast do seahorses move per hour?

• 1.6 yards (1.5 m)

• 10 yards (9 m)

• 0.1 yards (0.09 m)

• 5 yards (4.5 m)

The Great Barrier Reef is so large it can be seen from space.

• True

• False

What is the function of the dorsal fin in common seahorses?

• Runs along their backs; beats 30–70 times per second to help move them forward.

• Used for grasping onto objects in their environment.

• Helps them camouflage by changing color.

• Stores nutrients for long periods.

According to the passage, which species of jellyfish has a bell that measures up to 8 feet in diameter and tentacles as long as 120 feet?

• The lion's mane jellyfish

• Moon jellyfish

• Box jellyfish

• Portuguese man o' war

Which two features of the jellyfish in the image match the description in the passage?

• It has a transparent body and long tentacles.

• It has fur and sharp teeth.

• It has wings and a beak.

• It has scales and fins.

Jellyfish are only found in the ocean.

• True

• False

Fill in the blank: The word 'Manifest' means to ________ noticeable. (The effects of a box jellyfish's sting can manifest within minutes.)

• become

• ignore

• hide

• reduce

Fill in the blank: The word 'Bioluminescence' means the emission of a bright, colorful light by some types of animals, such as jellyfish and ________.

• fireflies

• frogs

• cats

• eagles