slideshow # 3 caribbean invertebrates 2008 edition
TRANSCRIPT
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- Slideshow # 3 Caribbean Invertebrates 2008 Edition
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- Phylum Molluska: Bilateral Symmetry Body has: visceral mass (organs) mantle, adapted for respiration or shell secretion one or more muscular feet for mobility True coelom in visceral mass
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- Rough File Clam - bivalve tucked into crevasses in reef snap shut if threatened filter feeders
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- Amber Penshell - bivalve closes when approached shells often overgrown bivalve mollusk filter feeder
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- Chitons - Polyplacophora most species graze algae from rocks shell divided into seven separate plates
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- Queen Conch - Gastropod
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- Flamingo Tongue Snail - Gastropod found feeding on gorgonians spotted mantle will retract if disturbed poison is stolen from gorgonians
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- Reef Octopus - Cephalopod only likely to come out at night masters of quick color change approach gently, it may play!
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- Reef Squid - Cephalopod colors shimmer over skin often in schools may approach you closely if youre calm
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- Lettuce Nudibranch skin ruffles on back (gills) look like lettuce color variable feed on algae
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- Phylum Echinodermata Many have hard endoskeleton just beneath the surface spines may penetrate out Radial Symmetry as adults Most have arms radiating from central disk
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- Basket Star daytime appearance catches plankton with arms, passes it into mouth in center unrolls at night
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- Black and White Crinoid
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- Golden Crinoid 20 arms for feeding body hidden in reef
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- Brittle star
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- Sea Biscuit; Heart Sea Urchin look for inch pea crab in spines most likely on sand at night
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- Pencil Sea Urchin
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- Long-spine Sea Urchin
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- Sea Urchin
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- Sea Cucumber; Tigers Tail tail anchored in reef, mouth end scavenges 3 feet 6 feet long
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- Sea Cucumber; Donkey Dung
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- Phylum Arthropoda Class Crustacea Hard exoskeleton Jointed appendages
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- Thor Anemone Shrimp
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- Spotted Cleaner Shrimp
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- Banded Coral Shrimp Body length
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- Pedersons Cleaning Shrimp Common in corkscrew anemone may clean your hand if youre patient
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- Arrow Crab Spider-like Long rostrum (snout) Eyes at base of rostrum Purple chelipeds Body length
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- Channel Clinging Crab (king crab)
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- Nimble Spray Crab Fluorescent green line Hide under boulders or sea urchins when approached
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- Hermit Crab
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- Spiny Lobster
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- Spanish/Slipper Lobster Only likely to see one on a night dive Slipper shaped?
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- Worms Most or all of these are in the Annelid phlya, with segmented bodies
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- Christmas Tree Worm 2 spiral crowns per worm crowns serve as gills and feeding appendages
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- Bristle worm
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- Horseshoe Worm uses fronds for feeding and respiration
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- Spaghetti Worm Multiple white feeding tentacles Retracts when disturbed
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- Cnidarians All have: tentacles stinging cells a gut with one opening medusa or polyp body form
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- Bleached Brain Coral 10 ft
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- Brain Coral 10 ft
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- Elkhorn coral Dont get hung up on these in shallow water! 3 feet to 12 feet tall/wide
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- Great Star Coral 2-8 feet across
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- Staghorn coral 1-8 feet across, home to damselfish
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- Finger and Pencil Corals 1 foot to 4 feet across Finger: 3 160 deep Pencil usually deep Finger whitish Pencil yellowish
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- Lettuce Coral colonies vary in shape all display ridged surface
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- Flower Coral large coralites on individual stalks polyps extended
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- Shelf Coral 1 foot to 5 feet wide Several corals take this form on the wall growing to light
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- Fire Coral White, filamentous edges May take many different shapes The COLORS are the key!
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- Cassiopeia (Mangrove Jelly)
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- Sea Wasp generally encountered 1-10 deep Avoid stings, but if stung, treat as follows: apply meat tenderizer & vinegar paste or baking soda paste shave area DONT rinse with soap or fresh water (causes unfired nematocysts to fire) wash gear in salt water and allow to dry
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- Portuguese Man-of-War Float size Tentacles 10-30 feet long!!
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- Sea Fan; Gorgonian 2 feet 6 feet long wave towards & away from shoreline with surge
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- Sea Plume; Gorgonians 1 foot 7 feet tall
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- Sea Rod; Gorgonian foot 7 feet tall
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- Corkscrew Anemone
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- Giant caribbean anemone
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- Sponges Filter feeders important for water clarity No true tissues Sessile as adults Ciliated, free-swimming larvae
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- Netted Barrel Sponge 2-5 feet across
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- Pink Azure Vase Sponge look inside for brittle stars
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- Strawberry Vase Sponge
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- Encrusting Sponge
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- Yellow Tube Sponge 2-4 feet across
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- Purple Tube Sponge 2 feet 6 feet long
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- Touch-me-not Sponge touch can result in burning, numbness, and rash treat with vinegar, then meat tenderizer, then cortisone ointment
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- Rope Sponges 1-8 feet long only in calm, deep water many colors and species
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- Oddballs
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- Hawksbill sea turtle Hawks beak in mouth region Serrated edges on posterior of shell 1 foot to 4 feet long
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- Tunicate 1/2-3/4 in.