INTRODUCTION TO SEDIMENTS
Slide Show
Sampling an exposed sediment at low tide Surface of an exposed sediment with evidence of bioturbation Eel Grass Zostera marinaEel grass requires bright light and clear water. Excess algal growth is killing it off.
Abarenicola pacificaA head-down deposit- feeding polychaete, A. pacifica maintains a U-shaped burrow, whose bottom may be 20-25 cm below the sediment surface. It feeds upon sediment, and passes rope-like fecal strands to the sediment surface. This mixes deep and shallow sediments.
Polychaete worm (Nereis vexillosa) Clam Worm (Nereis virens) Burrowing Shrimp(Callianassa californiensis) Mantis Shrimp (Hadrosquilla perpasta) Southern Rock Lobster (Jasus novaehollandiae) Pacific Mole Crab (Emerita analoga) Horseshoe "Crabs" (Limulus polyphemus) Macoma Clam in its burrow Rock Sole Softshell Clam (Mya arenaria) Mussel Mytulis edulis Sand Crab (Uvalipes)