strange but true…. sea cucumber echinoderms (like starfish, sea urchins, sand dollars) radially...

Download Strange but true…. Sea Cucumber Echinoderms (like starfish, sea urchins, sand dollars) Radially symmetrical Have a water-vascular system that functions

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  • Strange but true
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  • Sea Cucumber Echinoderms (like starfish, sea urchins, sand dollars) Radially symmetrical Have a water-vascular system that functions as hydraulic muscles Eat decaying matter that floats in the water or is in the sand
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  • The biggest sea cucumber, the tiger's tail sea cucumber, is about 2 m long
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  • Star fish and Brittle stars These marine invertebrates move very slowly along the sea bed. There are over 2,000 different species of brittle stars
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  • Brittle stars are mainly detrivores; they eat decaying matter and plankton. Some brittle stars can also kill small animals. They push their stomach out through their mouth with 5 teeth (located on the underside) and digest the prey (there is no anus). Sea stars are carnivores. They eat clams, oysters, coral, fish, and other animals.
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  • Sea horsesand sea dragons? coronet: nearly as unique as a human thumbprint dorsal fin: moves fish forward pectoral fins: control turning and steering eyes: each eye moves independently
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  • reproduction: male becomes pregnant when a female deposits her eggs into his pouch; pregnancy lasts about two to three weeks; once the male gives birth, he usually becomes pregnant again right away diet: consume up to 3,000 brine shrimp each day; have no teeth and swallow food whole species: about 35 size: from 1/4 inch to a foot or more range: temperate and tropical coastal waters
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  • Life is hard for the seahorse!! Natural predators, such as crab, tuna, skates, and rays Storms are the biggest natural cause of death for adult seahorses (tear them from their holdfasts, to be cast ashore or die of exhaustion). Seahorses are sought after for: Chinese medicine Aquariums Souvenirs
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  • Sea Dragons!
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  • Dragons! Close relatives of sea horses. Larger bodies and leaf- like appendages (can hide among floating seaweed or kelp beds). Feed on larval fishes and amphipods (mysids - "sea lice").
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  • Nudibranchs
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  • Nudibranch fun facts: Also known as sea slugs Mollusks 3000 species Essentially snails without shells Name means "naked gill" Benthic organisms (live on the ocean bottom) Grazing carnivores Simultaneous hermaphrodites (possess both male and female sex organs at the same time) Very bright colors may be warning to predators that they are toxic!
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  • Giant swimming nudibranch
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  • Giant Clam Mollusk Bivalve (2 shells) Southern & Western Pacific and Indian Oceans Diet: plankton and nutrients produced by symbiotic algae The algae also gives part of its colour
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  • Sea Anemones
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  • Sea Anemones: look like plants, but are actually animals! Invertebrates (no skeleton) Coelenterates Live attached to firm objects in the seas (sea floor, rock, or coral), but they can slide around very slowly. Carnivorous Mutualism: Clown fish always live near anemones; they are immune from (and protected by) the stinging tentacles. The clown fish help the anemone by cleaning the tentacles (as the fish eat detritus) and perhaps by scaring away predators.
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  • Sponges
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  • Sessile (cant move) Radial or no symmetry. Suspension feeders. Drive water through systems of canals/chambers, capturing small particles of food and ingesting them. No tissues (simplest multicellular animal)
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  • Strange But True In Class Assignment Create a chart like the one below on white paper and complete: Name of Marine Creature2-3 Interesting Facts Sea Cucumber Star Fish Brittle Star Sea Horse Sea Dragon Nudibranch Giant Clam Sea Anenome Sponge


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