14 D
Characteristics of these types of organisms include being warm blooded, able to breathe air, and bearing live young.
What are marine mammals?
Similar to dolphins, these animals have a blunt stout, a more triangular-shaped dorsal fin, and flat teeth.
What are porpoises?
The vast majority of benthic species live on this.
What is the continental shelf?
These organisms have hard exoskeletons, segmented bodies, and jointed limbs.
What are crustaceans?
Spiny lobsters use these to sense the environment around them. They also have noise-making devices that are used for protection.
What are antennae?
These marine animals have ear flaps and large front flippers, lack claws on their fore flippers, and are able to move very well on land.
What are sea lions?
This is the name for parallel rows of flexible plates made of keratin in the mouths of whales. It is used to sift out small prey items from seawater.
What is baleen?
This is the biggest stressor for both the spray zone and the high tide zone.
What is drying out?
This is the relationship between wave energy and oxygen levels in the sand.
What is direct?
These are highly productive ecosystems that provide shelter for a variety of organisms.
What are kelp forests?
Cetaceans have modifications for oxygen use which helps them in deep-diving, including being able to hold their breath for very long periods and having dense layers of these lining their alveoli.
What are capillaries?
Baleen whales use this to communicate over long distances and maintain contact with members of their own species.
What is sound?
Competition for attachment sites is the biggest stressor for benthic organisms residing in this particular zone.
What is the middle tide zone?
There are fewer species on sediment-covered shores compared to rocky beaches due to a lack of these.
What are niches?
It is likely that the shells of oysters are so thick to protect them against these.
What are hole-drilling snail predators?
One muscular adaptation for deep diving in cetaceans is that their muscle tissue is relatively insensitive to high levels of this.
What is carbon dioxide?
Toothed whales use this to locate and stun their prey.
What is echolocation?
This, as well as predation, are the biggest stressors for organisms in the low tide zone.
What is wave energy?
The extra claw on this particular crab helps to attract females and fight off other male competitors.
What is the fiddler crab?
The three stages of coral reef development are fringing, barrier, and this.
What is atoll?
Having collapsible rib cages is one adaptation in cetaceans for avoiding this.
What is nitrogen narcosis?
Toothed whales may have high intelligence due to the fact that this is relatively large compared to their body size.
What is the brain?
Algae have adapted these in low tide zones to prevents being washed away by wave energy.
What are strong holdfasts?
These two organisms ingest the coating of biofilm on sand grains.
What are heart urchins and annelid worms?
The diversity of benthic organisms is lowest beneath upwelling regions because dead organic matter that falls to the ocean floor decomposes, using up this.
What is oxygen?