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  • white tips: D1, pectoral, C
  • snout long (>/= mouth width), broad
    nostril flaps high, triangular
    D1 high, origin near rear insertion of pectoral
    high crest between D1 & D2
    Carcharhinus altimus, Bignose Shark
    top teeth: triangular (length > base width)
    pectoral long, straight
  • C black margen, broader below
    D1 origin over/behind pectoral rear tip
    pectoral long, narrow, curved
  • body slender
    snout wide, blunt point
    D1 origin ~over free inner tip of pectoral
    Ds small
    ~ no ridge between Ds
    color plain
    Carcharhinus brachyurus, Copper Shark, Narrowtooth Shark, Bronze whaler Shark
    pectoral: long, straight
  • elongate
    snout long, pointed
    eyes large
    D1 low, origin over ~center inner margin pectoral
    D2: small, orgin just behind A origin
    Carcharhinus cerdale, Pacific smalltail Shark
    pectoral small
    A deeply notched at rear
  • slender
    uniform color
    D1 small, orgin behind pectoral
    D2 < A, both low, free rear tips long
    pectoral: long, narrow, curved
  • slender
    snout moderately long, broadly round
    D1 medium height, origin over rear 1/2 pectoral inner margen
    low ridge between Ds
    Carcharhinus galapagensis, Galapagos Shark
    pectoral curved
    pelvics well behind D1
  • heavy body, thick head
    snout very short, round
    small eye
    D1 broad, triangular, origin ~over pectoral rear insertion
    adult color uniforme; juvenile - edges fins dark
    pectoral large, angular
  • body stout
    snout long, pointed
    small eyes
    D1: large, curved tip, origin ~ over rear pectoral insertion
    flank: white stripe
    black tips: all fins except A & top tip C
    A white
    Carcharhinus limbatus, Blacktip Shark
  • broad white tips: D1, pectoral, lower tail
    D1 very large, rounded
    Carcharhinus longimanus, Oceanic whitetip Shark
    pectoral very long, rounded
  • D1 & C bottom lobe: bright black tips + white inner boundary
    upper C & other fins: black edges
    Carcharhinus melanopterus, Blacktip reef Shark
  • snout short, round
    large eyes
    D1 curved, origin ~over pectoral free rear tip
    pectoral: large, curved
    pelvic origin near D1
  • slender body
    snout: long, narrow, conical, tip - black & white spot
    eye large
    Nasolamia velox, Whitenose Shark
    nostrils: large, transverse, very close
  • stocky; snout short, wide, round
    yellow-brown
    2 large Ds
    Negaprion fronto, Pacific Lemon Shark
    teeth narrow, smooth
  • elongate
    snout long, narrow
    D1 nearer pelvic than pectoral
    blue
    Prionace glauca, Blue Shark
    pectoral very long, narrow, curved
  • snout long, pointed
    eye large
    C rear edge black
    Ds small, D1 origin ~over pectoral rear tip
    D2 origin over rear 1/3 A base
    Rhizoprionodon longurio, Pacific sharpnose Shark
    long crests before A
    pectoral small, triangular
  • slender
    snout short, blunt
    white tips: D1, tail top, sometimes D2 and lower C
    D2 & A large
    D1 far behind pectorals
    Triaenodon obesus, Whitetip reef Shark
    nostrils - tubular flaps