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Marine Life part 2. We will cover. Worms Molluscs Crustaceans Echinoderms. Worms Free living. Segmented body. head with well developed eyes, tentacles and jaws. parapodia with bristles. Worms Free living. A Typical Flatworm. tentacles and eyes. wavy edges help
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We will cover • Worms • Molluscs • Crustaceans • Echinoderms
WormsFree living Segmented body head with well developed eyes, tentacles and jaws parapodia with bristles
WormsFree living A Typical Flatworm tentacles and eyes wavy edges help movement by rippling
WormsSedentary hard skeleton-like calcareous tube exit hole tube gills
Worms – Sedentary Tube worms in calcareous tubes
Worms - Sedentary tube of stones and mud stuck together
Worms - Sedentary “Sand Mason” tube of sand and shell
MolluscsSea-snails and Limpets siphon shell coiled tentacles head foot muscular
Spire of shell MolluscsSea-snails and Limpets shell – not always coiled foot underneath (cannot always be seen as shell may cling to rock) operculum covers opening when foot pulled in
Molluscs – Sea snails Painted top shell
MolluscsBi-valves shell exhalent siphon muscular foot inhalent siphon
Molluscs – Bi-valves Great scallop
Molluscs - Sea Slug shell often hidden inside body tentacles gills for breathing often colourful
Molluscs – Sea slug Sea slug
Molluscs – Sea slug Sea slug
Molluscs – Sea slug Sea hare
Molluscs - Chiton Mantle covers body underneath segmented shell overlapping plates mouth and muscular foot underneath
Molluscs – Chiton Coat of mail shell
carapace covering thorax & head abdomen mouth parts 5 pairs of jointed walking legs Crustaceans tail fan swimming legs
Crustaceans Shrimp
Crustaceans Squat lobster
Crustaceans Green crab
Crustaceans Velvet swimming crab
Crustaceans Marbled swimming crab
Crustaceans Edible crab
Crustaceans Crayfish
tube foot with sucker spines (not always obvious) central mouth underneath Echinoderms - Starfish
central disc tube feet on arms spines Echinoderms - Brittlestar arm
Echinoderms – Starfish Common starfish
Echinoderms – Starfish 7 armed starfish
Echinoderms – Starfish Spiny starfish
Echinoderms – Starfish Brittlestars on Breadcrumb Sponge
Spines Shell called “test” EchinodermsSea Urchin Tube feet with suckers Mouth underneath
Echinoderms – Sea Urchin Common urchin
Summary • Worms • Molluscs • Crustaceans • Echinoderms