Engineering Design Process - Bringing Fish Up from the Deep

Why is the twilight zone considered mysterious?

• Because it is fully explored

• Because it is very well studied

• Because it is largely unknown and understudied

• Because it is home to many known species

What percentage of fish in the twilight zone are not known?

• About 25%

• About 75%

• About 100%

• About 50%

What recent technological advancement has allowed exploration of the twilight zone?

• Satellite imaging

• Sophisticated and reliable diving equipment

• Underwater drones

• Advanced fishing techniques

What is a major challenge faced when diving into the twilight zone?

• Pressure

• Visibility

• Currents

• Temperature

What happens to a fish's swim bladder when it is brought to the surface from the depths?

• It disappears

• It inflates

• It remains the same

• It shrinks

What was the innovative solution to bring fish from the twilight zone to the surface without harm?

• Using a simple net

• Using a water filter housing as a decompression chamber

• Using a traditional fish tank

• Using a robotic arm

What was the main purpose of the portable submersible decompression chamber?

• To decompress fish slowly to surface pressure

• To measure the depth of the ocean

• To capture images of the fish

• To provide light underwater

How long does the decompression process take for the fish brought from the twilight zone?

• 72 hours

• 24 hours

• 12 hours

• 48 hours

What is one of the species of fish brought back from the twilight zone?

• Ferry basslets

• Clownfish

• Whale

• Shark

What is the main goal of bringing back live animals from the twilight zone?

• To conduct experiments

• To sell them

• To increase the collection of the Academy

• To connect people with deep-sea life and promote conservation