Phylum Porifera

1
Phylum Porifera

• Basic sponge knowledge
• Water movement and feeding
• Focus on the choanocyte
• Protection in sponges
• Spicules
• Toxins
• Cryptic location
• Camouflage
• Regnerative ability

2
Haliclona sp.

• Location
• Protection

3
Phylum Cnidaria

• Polyps and medusae
• Basic parts of both body forms

4
Phylum Cnidaria

• Alternation of generations

• Note that anemones have no medusa form, but do
  have functional gonads within polyps

5
Phylum Cnidaria

• Cnidocytes/nematocysts

6
Phylum Cnidaria, Class Anthozoa Local intertidal
species

• Anthopleura xanthogrammica

• Anthopleura elegantissima

7
Phylum Cnidaria, Class Anthozoa Local intertidal
species

• Anthopleura artemesia

• Epiactis prolifera

8
Phylum Platyhelminthes

• Overall body organization

9
Marine Platyhelminthes
10
Phylum Nemertea
11
Phylum Annelida

• Overall body organization

12
Phylum Annelida, Class Polychaeta

• Free-crawling predators

Family Nereidae
Family Glyceridae
Photos Morris et al.
13
Phylum Annelida, Class Polychaeta

• Tube worms with tentacular crowns

Family Sabellidae Photo coralsphere.com
Family Serpulidae Photo Taata Divers
14
Phylum Annelida, Class Polychaeta

• Deposit feeders

Family Terrebellidae
15
Phylum Annelida, Class Polychaeta

• Tube-dwelling, mucous-bag feeder (Chaetopterus)

Family Chaetopteridae
Photo Erling Svensen
16
Trocophore larva
Photo NOAA