Rocky Intertidal

Question 1

Spray Zone and Examples

Answer 1

highest high tide, never submersed, receives some sea spray from waves at high tide, salty rocks; examples: lichens and some snails

Question 2

High Tide Zone and Examples

Answer 2

lowest high tide and covered only during the highest high tide; examples: cyanobacteria, algae, sometimes barnacles, and limpets

Question 3

Mid Tide Zone and Examples

Answer 3

highest low tide, submerged and exposed during each tidal cycle; examples: barnacle and mussels

Question 4

Low Tide Zone and Examples

Answer 4

lowest low tide, and exposed briefly at low tide (short periods of drying); examples: abundant algae, starfish, sea urchins, tunicates, anemones, etc.

Question 5

Subtidial and Exampels

Answer 5

Always submerged and high energy wave; examples: algae dominated

Question 6

Adaptations for Wetting/Drying: examples

Answer 6

Migration: red rock crabs
Reside only in moist area:
Seal up tightly: snails, mussels, anemones
Adapt to drying out: fungus

Question 7

Adaptation for Temperature Fluctuation: examples

Answer 7

Morphology and Pigmentation:
Maintain extra water for evaporating: barnacles
Antifreeze/Allow certain part to freeze:

Question 8

Adaptation for Salinity Fluctuation: examples

Answer 8

Close shells and maintain internal salinity; osmoconform

Question 9

Competition for Space

Answer 9

Mostly stolen by barnacles and limpets but can be overgrown by mussels

Question 10

Adaptation for Wave Action: examples

Answer 10

Morphology: inverts and algae
Attach to the rocks: inverts and algae
Grow or hide in crevices:
Loss of air bladders in fish: