NAUI Marine Environment & Ecology 3

Question 1

What is the NAUI-recommended approach when diving near marine life?

Accepted Answer

Observe without touching, feeding, or disturbing organisms

Answer

Collect small specimens for onshore identification

Answer

Chase away potentially aggressive species before the group enters

Answer

Surface immediately if any large marine animal approaches

Question 2

Which diving practice best protects coral reefs from diver-related damage?

Accepted Answer

Maintaining proper buoyancy control throughout the dive

Answer

Wearing thick exposure suits to prevent stinging contact

Answer

Using reef hooks to anchor in place above coral

Answer

Moving quickly through reef areas to minimize time near coral

Question 3

What practical effect does passing through a thermocline have on a diver?

Accepted Answer

It produces a noticeable drop in water temperature and often a change in visibility

Answer

It creates strong horizontal currents requiring compass corrections

Answer

It signals entry into mandatory decompression zone depths

Answer

It reduces the partial pressure of oxygen in the breathing gas

Question 4

Why are invasive lionfish considered a serious ecological threat in Atlantic and Caribbean waters?

Accepted Answer

They are voracious predators of native reef fish with no natural predators in the Atlantic

Answer

They produce venom that contaminates the human water supply

Answer

They physically destroy coral structure through territorial behavior

Answer

They compete directly with sea turtles for nesting habitat

Question 5

Which anchoring practice poses the greatest threat to shallow seagrass beds?

Accepted Answer

Dropping anchor directly into the seagrass bed

Answer

Using a sand anchor in adjacent sandy areas

Answer

Mooring to a designated buoy near the grass bed

Answer

Drifting freely over seagrass while snorkeling

Question 6

What does the 'Leave No Trace' principle mean for scuba divers?

Accepted Answer

Have zero impact on the marine environment — collect nothing, disturb nothing, leave nothing behind

Answer

Remove all human-made litter found on the ocean floor during every dive

Answer

Only dive in designated marine protected areas free of human impact

Answer

Use only biodegradable sunscreen and equipment lubricants before diving

Question 7

Which conservation organizations does NAUI actively support for underwater environmental stewardship?

Accepted Answer

Project AWARE and Reef Check

Answer

PADI Environmental Standards and SeaWorld Conservation Fund

Answer

NOAA Fisheries Management and International Maritime Organization

Answer

World Wildlife Fund and American Cetacean Society