Lab Exam

• spaghetti


  • narrow seam-lines of minerals different from the parent rock the seams are found in
  • indicators of volcanic activity
  • filled with slippery quartz
  • denotes weak areas within a rock where slippage or breakage could occur
• tafoni


  • marked, smooth, rounded holes bored into the rock
  • animals with a capacity for eroding rock substrates can create it
• angled rows


  • layers of sediment that have been lifted into odd position by seismic activity
  • waves create a slope of side of rock facing the ocean and a steep vertical face on the backside of rocks
• urospora penicilliformis

  • green hair
  • exposed rocks, covered partly with sand
  • fine and filamentous
  • dense cover on the upper-most surfaces of splash zone rocks

  
• ulva sp


  • sea lettuce
  • on the highest intertidal boulders
  • very thin, leaf-like, slightly ruffled blades
  • bunches on tops and crevices in upper exposed rocks

  
• egregia laevigata


  • feather boa kelp
  • flat-strap stem with perpendicular leaves
  • scattered and large floats

  
• macrocystis pyrifera


  • giant bladder kelp
  • large, ripped blades that enhance surface area
  • absorbs nutrients through blades

  
• ralfsia pacifica


  • tar-spot algae
  • on rocks in high-tide zone
  • smooth, dark brown-black algae

  
• chondracanthus exasperates 


  • turkish towel/cat's tongue
  • large, flat blades covered in bumps (papillae)

  
• phyllospadix torreyii


  • surf grass
  • near water line
  • thin, long, rounded strands with roots

  
• aglaophenia struthionides


  • ostrich plumed hydroid
  • beige, feathery-looking clumps
  • orange rice grains: reproductive members

  
• anthopleura sp


  • sea anemones
  • grayish-green color
  • scattered in depressions or small pools
• chaetopterus variopedatus


  • parchment worm
  • white-cream, floppy, flexible, rubbery tube

  
• phragmatopoma californica


  • sand-castle worm
  • clusters of tubes
  • bits of sand plastered together with mucus secreted by worms, forming a "honeycomb"

  
• membranipora membranacea


  • jack-frost bryozoan
  • on thin blades of red algae
  • colony resembles scaly appearance of shed snake skin

  
• serpulorbis squamigerous


  • scaled-worm snail shells
  • clusters of tangled, coiled shells
  • seal off the open end of tube
  • dark, round, CaCo3 plate (operculum)

  
• collisella sp


  • rock limpets
  • oval little peaked hats
  • gray, dark brown, or tan

  
• discurria insessa


  • seaweed limpet
  • dark chestnut to red-brown
  • apex is the highest part of shell, sitting slightly forward
  • found on feather boa kelp and eats stipe

  
• littorina sp


  • periwinkle
  • dark purple-black
  • tall, narrow, pointed apex

  
• penitella penita


  • flat-tip piddock
  • drills round holes on rocks
  • white ring of shell visible

  
• chthamalus fissus


  • acorn or brown buckshot barnacle
  • large clusters of volcano-shaped shell on rocks
  • pale tan to dull gray
  • open valve creates t shape

  
• balanus glandula


  • white buckshot or acorn barnacle
  • small to moderate size
  • small ridges on valves
  • closed valve creates W or M
• pollicipes polymerus


  • gooseneck barnacles
  • filter feeders
  • white claw-like bunches
  • sits on rubbery green-black stalk that attaches to substrate on rock

  
• beach hoppers 


  • water-line isopods
  • pale white, transparent
  • swim in shallow pools

  
• cancer antennarius


  • red rock crab
  • oval-shape carapace
  • 2 black tipped large front claws

  
• phalacroocorax sp


  • cormorant
  • black, fusiform shape
  • long snaky neck and beak

  
• ambrosia chamissonis


  • silver beachweed
  • blue-gray with long silver leaves
  • hair trap dew and insulate leaves from wind, cold, sun

  
• sargassum muticum


  • wire weed
  • gold-olive green
  • small, round floats
  • feathery looking strands

  
• colpomenia peregrina 


  • olive bubble kelp
  • rubbery, paper thin
  • air or water filled bubbles on rocks

  
• corallina sp


  • branched coralline algae
  • fine, dense, small blades
  • dull red-pink
  • CaCO3 on branches

  
• anthopleura sola


  • sunburst anemone
  • more yellow-green with fine brown-black lines

  
• anthopleura elegantissima


  • aggregated sea anemone
  • stinging cells
  • rocks and shells on the outer portion

  
• mopalia muscosa


  • mossy chiton
  • round oval
  • 8 piece shell

  
• fissurella volcano


  • keyhole or volcano limpet
  • slender and elongated
  • long, oval opening at the top
  • pink-red with fine black-brown lines

  
• astraea undosa


  • wavy turban snail
  • thick, large, heavy shell with a wave pattern
  • muscular and bubbly-looking pale foot with a white operculum
  • often covered in in algae, snails, seaweed

  
• kelletia kelletii


  • kellet's whelk
  • white, ice cream cone shaped shell
  • rusty brown, flat, oval operculum with a peach color and white and black specs

  
• norrisia norrisi


  • norris' moon snail/kelp snail
  • rust-brown coiled shell
  • green umbilicus
  • orange-red and black foot
  • round and hairy operculum

  
• calliostoma sp


  • ring-topped turban sail
  • mother of pearl
  • iridescent whorls

  
• tegula funebralis


  • black turban snail
  • small and round shell
  • black shell with a white top
  • lavender with age

  
• littorina keenae


  • eroded periwinkle
  • pink-gray color