OCEANOGRAPHY & MARINE SCIENCE

An extensive series utilizing many multiple
images to present a comprehensive and
integrated approach to the total spectrum
of marine biology and oceanography. Solid
science wonderfully detailed!

CORAL REEF COMMUNITIES
A close and varied look at these under- water marvals and their inhabitants as well as detailed explanations of how they develop. 3 pgms. 90 slides and guides.
EPSS-0855X SLIDES
$129.95

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SAVE OVER $42.00 ON 3 SLIDE SET BUNDLE ORDER EP #SS-0855X.....$129.95
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CORAL REEFS Slides order #SS-0855S.....$49.95

The colorful and diverse community of the coral reef is explored: the corals
themselves and the principal types of reefs they construct. Presents some typical
inhabitants of the reefs, along with reasons for the remarkably high productivity of coral
reef communities. 20 frames, cassette and guide. (Filmstrip order SS-0855F.....$15.00.)

CONTENT SAMPLE: 6. Coral atolls are confined to tropical waters in the Indian
and Pacific Oceans, where they sometimes occur in archipelagoes. The presence of coral atolls
rising from deep oceanic waters is puzzling, especially since active growth of reef-building corals
is confined to the upper 20 m or so of the water column. Charles Darwin investigated coral atolls
aboard the Beagle in the 1830's and proposed a theory for their formation that is widely accepted
today. Shown in this frame are diagrams illustrating Darwin's theory.

Darwin proposed that coral atolls were initially fringing reefs that surrounded a volcanic
island (a). After a volcano had risen above the ocean surface corals began to grow in shallow
waters along its flanks. Eventually the great bulk of the volcanic island caused it to gradually
subside due to isostatic adjustments in the sea floor (b). Weathering and erosion also helped to
reduce the island's height above sea level. Meanwhile wave action on the fringing reef produced
quantities of coral rubble. Some of this was swept down the seaward slope and thereby
contributed to the lateral growth of the reef. Other coral debris was deposited in the near-shore
waters where it accumulated to form a shallow, ring-shaped lagoon. Coral growth maintained
the reef within the sunlit, surface waters as the volcanic mountain continued to subside.
Eventually the island sank below the surface of the ocean, and coral rubble created a central
lagoon. Storms and currents eventually piled up coral debris along the margin of the reef to form
the concentric series of atoll islands (c).

Support for Darwin's theory was obtained in 1952 when a deep-drilling rig twice hit
volcanic rock on Eniwetok Atoll after passing through 1250 m and 1400 m of shallow-water lime-
stones. This span of reef formations extended back to Eocene times, some 60 million years ago.
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ECOLOGY OF A CORAL SHORE Order #104....$42.50

The living coral reef provides an enrapturing excursion into another world.
Millions of animals and hundreds of plants populate every cubic yard of a living coral reef.
Striking underwater photos include corals, fan worms, gorgonians, sea fans, anemones,
fish, moray eel, green turtle, sea urchins, starfish, shrimp, lobster, flamingo tongue,
worm mounds, blue sponge and red sponge.

CONTENT SAMPLE: 11694 Though we think of corals as hard, reef-building colonies
of animals, they are not all hard. The soft corals, or gorgonians, are the same sort of colony,
but are built on a flexible framework rather than a rigid one. They are often branched like
candelabras and sway gracefully in the currents.

REVIEWS: "...the slide set on coral and the set on aquatic insects...are quite
good." L.D.F. Wildlife and Fisheries Sciences, South Dakota State University.
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CORAL ATOLL BIOLOGY Slides order #SS-0085S.....$79.95

Details the formation and geologic history of coral atolls and the evolution and
distribution of plant and animal life peculiar to them. A comprehensive yet succinct,
informative presentation. 50 frames. (Video order SS-0085V....$59.95, filmstrip order
SS-0085F....$25.00.)

CONTENT SAMPLE: 26. Reef-building corals live in the top zone where there is
sufficient light for the symbiotic algae. Such algae allows corals to live close together since the
algae remove wastes from coral tissues that otherwise would build to toxic levels.

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SURVEY OF THE ANIMAL KINGDOM VIDEOS

This exhaustive, award winning work is the definitive multimedia review of the great
variety of animal life found on this planet. Meticulously detailed, massively documented, with
extensive teachers' guide materials, this review provides in one encyclopedic package a library
full of carefully organized, hard to find information.

Eye-stopping photographs of live animals augmented by graphics where appropriate
makes this a memorable visual extravaganza! The combination of clearly presented facts and
fabulous photography presents an unparalleled learning experience! These 10 programs will earn
a unique place among your most useful teaching tools! Each part is available individually or as
part of a series.

INVERTEBRATE ANIMALS

PART I: SPONGES, ANEMONES, CORALS AND FLATWORMS. Order # FV-1319V....$89.95

Shows how taxonomic classification brings order to the immense variety of living
things, yet is also being revised constantly. Introduces the four subkingdoms: Protozoa,
Parazoa, Mesozoa and Metazoa. Photographic coverage includes volvox, euglenas,
amoebas, ciliates, Porifera, Cnidaria, flatworms, round worms, rotifers, bryozoans and
brachiopods.
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~0203-030~ Hermatypic (reef building) coral. photo by Alex Kerstitch.

Copyright (c) MCMXCVII Educational Images Ltd., Elmira, NY, USA. All rights reserved.

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