| Nassariidae | dog
whelks or baskets |  |  |  |  |
| Nassarius papillosus | pimpled
basket |  | Rare | Native |  |
| Nassarius pauperus |  |  | Uncommon | Native |  |
| Nassarius sp. |  |  | Uncommon | Native |  |
| Natica gualteriana |  |  | occasional | Native |  |
| Natica sp. |  |  | Uncommon | Native |  |
| Naticidae |  |  |  |  |  |
| Nematoneresis
unicornis |  |  |  | Native |  |
| Neothais harpa
|  |  | Uncommon | Native |  |
| Nereididae | nereid
worms |  |  |  |  |
| Nerita picea | black
nerite | pipipi | Abundant | Native |  |
| Nerita polita | polished
nerite | ku'upe'a | Uncommon | Native |  |
| Neritidae | nerite
snails |  |  |  |  |
| Nesochthamalus
intertextus | purple
rock barnacle |  | Abundant | Native |  |
| Nicolea gracilibranchis |  |  | rare | Native |  |
| Nodilittorina
hawaiensis |  |  | Common | Endemic |  |
| Nucia speciosa |  |  | rare | Native |   |
| Octopodidae | octopus |  |  |  |  |
| Octopus cyanea | day
octopus | he'e
mauli | Uncommon | Native |      |
| Octopus ornatus | ornate
octopus | he'e
puloa | Uncommon | Native |  |
| Ocypode ceratophthalmia | horned
ghost crab |  | occasional | Native |  |
| Ocypode pallidula | pallid
ghost crab |  | Uncmmon | Native |  |
| Ocypodidae | ghost
or fiddler crabs |  |  |  |  |
| Odostomia
gulicki |  |  | Occasional | Native |  |
| Odostomia
oxia |  |  | Uncommon | Native |  |
| Odostomia
sternsiella |  |  | Uncommon | Native |  |
| Ophidiaster
hemprichi | Hemprich's
star |  | rare | Native |  |
| Ophidiasteridae |  |  |  |  |  |
| Ophiocoma
brevipes | reticulated
brittle star |  | Uncommon | Native |  |
| Ophiocoma
dentata | toothed
brittle star |  | occasional | Native |  |
| Ophiocoma
erinaceus | spiny
brittle star |  | Common | Native |    |
| Ophiocoma
pica | pied
brittle star |  | Uncommon | Native |  |
| Ophiocomidae |  |  | |  |  |
| Ophiodermatidae |  |  | |  |  |
| Ophionereididae |  |  | |  |  |
| Ophioneresis
porrecta | long-arm
brittle star |  | Uncommon | Native |  |
| Ophiopeza
clarki |  |  |  |  |  |
| Opiodesoma
spectabilis | conspicuous
sea cucumber | weli | Uncommon | Native |  |
| Oreasteridae |  |  |  |  |  |
| Ostrea hanleyana |  |  | occasional | Native |  |
| Ostreidae | oysters |  |  |  |  |
| Otopleura
mitralis |  |  | Uncommon | Native |  |
| Pachycheles
pisoides |  |  | occasional | Native |  |
| Pachygrapsus
minutus |  |  | occasional | Native |  |
| Pachygrapsus
planifrons |  |  | rare | Native |  |
| Pachygrapsus
plicatus | pleated
rock crab | 'a'awa | Uncommon | Native |  |
| Paguridae | right-handed
hermit crabs | unauna |  |  |  |
| Pagurixus
festinus | fast
hermit |  | occasional | Native |  |
| Palaemon
debilis | feeble
shrimp |  | Uncommon | Native |  |
| Palaemon
pacificus | tiger
shrimp |  | Uncommon | Native |  |
| Palaemonidae |  |  |  |  |  |
| Palinuridae | lobsters |  |  |  |  |
| Palythoa
caesia | blue-gray
zoanthid |  | Common | Native |      |
| Panulirus
marginatus | banded
spiny lobster | ula | Occasional | Native |  |
| Panulirus
penicillatus | tufted
spiny lobster | ula | Uncommon | Native |  |
| Paragrubia
vorax |  |  | occasional | Native |  |
| Paranthura
ostergaardi |  |  | occasional | Native |  |
| Paranthuridae |  |  |  |  |  |
| Parapsuedes
neglectus |  |  | rare | Native |  |
| Parashiela
beetsi |  |  | Occasional | Native |  |
| Parashiela
sp. |  |  | Occasional | Native |  |
| Paraxanthias
notatus |  |  | occasional | Native |  |
| Parribacus
antarcticus | ula-pehu | sculptured
slipper lobster | Uncommon | Native |  |
| Patellidae | true
limpets | 'opihi |  |  |  |
| Peasiella
tantilla |  |  | Common | Native |  |
| Pectinidae | scallops |  |  |  |  |
| Pennaria
disicha | feather
hydroid |  | Occasional | Introduced |  |
| Percnon planissimum | flat
rock crab |  | Uncommon | Native |  |
| Periglypta
reticulata |  |  | Uncommon | Native |  |
| Perinea tumida |  |  | uncommon | Native |  |
| Perineresis
curvata |  |  | Uncommon | Native |  |
| Peristernia
chlorostoma |  |  | occasional | Native |  |
| Perophora
annectens |  |  | occasional | Native |  |
| Perophoridae |  |  |  |  |  |
| Petalochonchus
keenae |  |  | Common | Native |  |
| Petrolisthes
coccineus | red
porcelain crab |  | rare | Native |  |
| Phascolosoma
nigrescens | peanut
worm |  | occasional | Native |  |
| Phascolosoma
stephensoni |  |  | rare | Native |  |
| Phascolosomatidae |  |  |  |  |  |
| Pherecardia
striata | lined
fireworm | 'aha
huluhulu | Uncommon | Native |  |
| Philobryidae | minute
pens |  |  |  |  |
| Photis kapapa |  |  | rare | Native |  |
| Phyllochaetopterus
verrilli |  |  | occasional | Native |  |
| Phyllodoce
madeirensis |  |  | Occasional | Native |  |
| Phyllodocidae |  |  |  |  |  |
| Phymodius
nitidus |  |  | rare | Native |  |
| Pickworthiidae |  |  |  |  |  |
| Pilodius areolatus | areolated
xanthid crab |  | occasional | Native |  |
| Pinctada radiata
| pearl
oyster |  | Common | Native |  |
| Pinnidae | pen
shells |  |  |  |  |
| Plagusia
depressa tuberculata | scaly
rock crab |  | Uncommon | Native |  |
| Plagussidae | spray
crabs |  |  |  |  |
| Planaxidae |  |  |  |  |  |
| Planaxis labiosa |  |  | rare | Native |  |
| Platypodia
eydouxii | red-eyed
xanthid crab |  | rare | Native |  |
| Platypodia
hawaiiensis |  |  | occasional | Native |  |
| Plesiotrochus
luteus |  |  | Occasional | Native |  |
| Pleurobranchidae |  |  |  |  |  |
| Pocillopora
damicornis | lace
coral |  | Uncommon | Native |    |
| Pocillopora
eydouxi | antler
coral |  | Uncommon | Native |  |
| Pocillopora
meandrina | cauliflower
coral |  | Uncommon | Native |        |
| Pocilloporidae |  |  |  |  |  |
| Podoceridae |  |  |  |  |  |
| Podocerus
talegus lawai |  |  | occasional | Native |  |
| Polycarpa
aurita |  |  | Rare | Native |  |
| Polycirrus
sp. |  |  | rare | Native |  |
| Polydectus
cupulifer | teddy-bear
crab |  | occasional | Native |  |
| Polynoidae |  |  |  |  |  |
| Polyplectana
kefersteinii | Keferstein's
sea cucumber |  | Occasional | Native |  |
| Porifera | sponges,
unidentified | hu'aki |  |  |  |
| Porites compressa | finger
coral | pohaku
puna | Uncommon | Native |    |
| Porites lobata | lobe
coral | pohaku
puna | Uncommon | Native |    |
| Poritidae |  | pohaku
puna |  |  |  |
| Portunidae | swimming
crabs |  |  |  |  |
| Potamethus
sp. |  |  | rare | Native |  |
| Procellanidae | porcelain
crabs |  |  |  |  |
| Prodotia
ignea |  |  | rare | Native |  |
| Prodotia
iostomus |  |  | rare | Native |  |
| Protopalythoa
spp.
| zoanthid |  | Uncommon | Native |    |
| Protosquillidae | protosquillid
mantis shrimps |  |  |  |  |
| Pseudambasia
kalaupapa |  |  | rare | Native |  |
| Pseudobolentia
indiana | pebble
collector urchin | hawa'e
po'o hina | rare | Native |  |
| Pseudoceritidae |  |  |  |  |  |
| Pseudoceritidae
sp.
| white
striped flatworm |  | Uncommon | Native |  |
| Pseudoceros
sp.
|  |  | Uncommon | Native |   |
| Pseudocryptochirus
kahe | Kahe
Point crab |  | Common | Native | |
| Pseudoliomera
remota |  |  | rare | Native |  |
| Pseudoliomera
variolosa |  |  | rare | Native |  |
| Pseudovermilia
occidentalis |  |  | rare | Native |  |
| Pseudozius
caystrus |  | 'elekuma | rare | Native |  |
| Pseudozuxidae |  |  |  |  |  |
| Pteraeolidia
ianthina | blue
dragon nudibranch |  | Occasional | Native |  |
| Pteriidae | oysters |  |  |  |  |
| Ptychodera
flava | yellow
acorn worm |  | occasional | Native |  |
| Ptychoderidae |  |  |  |  |  |
| Pupa sp. |  |  | Uncommon | Native |  |
| Purpura aperta |  |  | Uncommon | Native |  |
| Pusillina
marmorata |  |  | Occasional | Native |  |
| Pylopaguropsis
keijii | broadhand
coral hermit |  | Uncommon | Native |  |
| Pyramidellidae | pyramid
shells |  |  |  |  |
| Pyramidelloides
miranda |  |  | Uncommon | Native |  |
| Pyuridae |  |  |  |  |  |