Fieldtrip to Abalone Cove

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Fieldtrip to Abalone Cove, Palos Verdes, Los Angeles Co., CA, February 8, 2008 (see also February 1)

A sunny afternoon…	…at Abalone Cove	Cyanoplax hartwegii
C. hartwegii	C. hartwegii (Hartweg's chiton)	C. hartwegii
Lottia limatula and Cyanoplax keepiana	L. limatula (file limpet)	L. limatula has dark head, cephalic tentacles, and side of foot
C. keepiana (underwater) were out foraging as the tide turned	A small Pachygrapsus crassipes among barnacles	P. crassipes (lined shore crab)
Anthopleura sola	A. sola (sunburst anemone)	Strongylocentrotus purpuratus (purple urchin)
Conus californicus (Calif. cone snail)	Stenoplax conspicua	S. conspicua (conspicuous chiton)
S. conspicua	S. conspicua (point to line of file=62mm)	S. conspicua
S. conspicua	S. conspicua	Aplysia californica releasing ink
A. californica (Calif. sea hare)	"Lottia" paleacea	"L." paleacea (surfgrass limpet)
"L." paleacea (note grazed area behind limpet)	Anthopleura sola, Pisaster ochraceus, and Corallina chilensis (see here)	Serpulorbis squamigerus
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Small red urchin with purple urchins	Ophiothrix spiculata	Ophiothrix spiculata
small S. conspicua	Leptochiton rugatus (small white chiton in foreground) with much larger S. conspicua	Image Caption
Image Caption	Volvarina taeniolata (banded California marginella) "Little is known of the biology of this common small snail" (Abbott & Haderlie)	V. taeniolata with brittlestars (unidentified)
V. taeniolata with brittlestars (unidentified)	Leptochiton rugatus	L. rugatus
Stenoplax conspicua	Stenoplax conspicua	hermit in Opalia funiculata shell
Hermit crab is possibly Pagurus hirsutiusculus (juvenile)	P. hirsutiusculus (?) in O. funiculata shell	Eupentacta quinquesemita (stiff-footed sea cucumber; see here and compare Cucumaria piperata)
Sea cucumber eviscerating sticky cuverian tubercles (see here)	Ceratostoma nuttalli (Nuttall's hornmouth)	C. nuttalli
pycnogonid (possibly Pycnogonum stearnsii) male carrying mass of embryos	pycnogonid (sea spider)	Pisaster ochraceus juvenile
Ophiopterus papillosa	O. papillosa	Ophioplocus esmarki (L) and Ophiopterus papillosa (R)
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unidentified hermit crab; possibly Isocheles pilosus - compare these: 1 - 2 - 3 - 4	This hermit has an unstudied (?) associated bryozoan on its shell (see Williams & McDermott 2004, JEMBE 305:1-128)	Megathura crenulata (Giant keyhole limpet)
M. crenulata	Possibly Betaeus longidactylus (visored shrimp; eyes under carapace, no forward spine between eyes)	Cyanoplax hartwegii (Hartweg's chiton)
C. hartwegii on shell of Venerupis philippinarum or Leukoma staminea	Lepidozona pectinulata	L. pectinulata
Image Caption	Image Caption	Octopus was actively ventilating its gills from under a rock
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Aplysia vaccaria is world's largest gastropod, up to 99 cm length & 14 kg, feeding mainly on Egregia (see here)	Mopalia muscosa (mossy chiton)	M. muscosa
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