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Samples: Black Prickleback and Water Jelly


Black Prickleback (Xiphister atropurpureus)

Other Name: Epigeichthys atropurpureus
Description: colour varies from reddish brown to black. Elongated body has 4 lateral lines. Conspicuous light band is present at base of tail fin.
Size: to 12"(30 cm)long.
Habitat: under rocks on exposed shore-lines, low intertidal zone.
Range: Kodiak Island, Alaska to northern Baja California.
Notes: The black prickleback feeds on an assortment of algae in addition to a few species of small invertebrates. This species breeds in late winter and spring. The egg mass is typically laid under a rock or similar object, then guarded by the male for about 3 weeks before the eggs hatch. This fish is most often found beneath a rock in little if any water. These damp conditions help keep the fish and other organisms from drying out, so if you turn over any rocks, please replace them carefully.


Water Jelly (Aequorea sp.)

Other names: Many-ribbed Hydromedusa; Many-ribbed Jellyfish; Water Jellyfish; Aequorea aequorea; Aequorea victoria.
Description: Transparent bell-shaped jelly with 100 or more rib-like radial canals and trailing tentacles.
Size: To 3" (8cm) in diameter.
Habitat: In open water and close to shore.
Range: Alaska to California.
Notes: Various species of water-jellies are found world-wide. Their luminescence is easily observed at night as soft, circular balls of pulsing light. This species is known to eat other species of jellies and on occasion to cannibalize its own species.