Be sure to write about what you are learning in the lab section of your notebook. You will be expected to answer questions about the lab activity during the lab self test and lab quiz. It helps to have your text and coloring books open beside you for support.

Eunice afra
		"Rock boring worm" Phylum  Annelida Class  Polychaeta Order   Errantia Family   Eunicidae
Morphology Long, cylindrical body divided into linear segments. Head with two cushionlike palps and five antennae. The second segment has two short tentacles. Feeding Has chitinous jaws for feeding on large particles. Defense Lives in borings and crevices where its protected. Reproduction Seperate sexes and synchronous spawning Habitat A variety of rocky habitats including borings in limestone Distribution Circumtropical and throughout the Gulf of California Other A major bioeroder of beachrock

Phascolosoma perlucens
	"Peanut worm" Phylum  Sipuncula Class   Order    Family   Phascolosomatidae
Morphology A medium sized, slender worm with a sac-like bodt and a long trunk. Patches of dark brown, sharp tubercles are located on the trunk and posterior end. There are ten to fifteen tentacles on the head that are not visible when the trunk is retracted (inverted). Feeding Feeds on detritus using its trunk and tentacles to mop up the area near the mouth of its burrow. Defense Lives in borings and crevices where its protected. Reproduction Seperate sexes and synchronous spawning Habitat A variety of rocky habitats including borings in limestone Distribution Ino-Pacific to the Gulf of California Other Bores into and bioerodes beahrock

Lithophaga aristata
	"Boring mussel" Phylum  Mollusca Class  Pelecypoda Order   Mytiloidea Family   Mytilidae
Morphology Characteristic shape of an hourglass or a figure 8. The mussel uses an acid-mucus secretion to soften the surface and then srapes the rock particles away by rotating its shell. The shell of the mussel is protected from its own acidic mucus by a special covering (periostracum). Feeding Filter feeder Defense Lives in borings where its protected. The surface opening is small where the mussel first enters and it becomes trapped and must live its entire life inside. Reproduction Separate sexes and spawning Habitat Intertidal Distribution Throughout the world in sub-tropical and tropical waters. Other This species commonly bores into rocks and shells of other molluscs.

Lithophaga spatiosa
	"Date mussel" Phylum  Mollusca Class  Pelecypoda Order   Mytiloidea Family   Mytilidae
Morphology Large wide shell covered with many rows of fine nodules. Feeding Filter feeder Defense Lives in borings where its protected. Reproduction Separate sexes and spawning Habitat Intertidally in shallow water. Distribution Northern Gulf of California to Ecuador. Other This species is commonly found boring into oyster shells.