Algal Collection (page 7)

Algal bloom, aerial photograph. The red colour of the water is caused by the proliferation of microscopic photosynthetic organisms in the seawater

Worm feeding on algae, light micrograph
Worm feeding on algae. Light micrograph of an microscopic annelid worm (subclass Oligochaeta, upper left) feeding on green algae

Microsterias green alga, light micrograph
Microsterias green alga. Light micrograph of a Microsterias sp. desmid green algae. Desmids are a common group of unicellular freshwater algae that have intricate cell walls

Algae. Photographed in the Red Sea

Pediastrum green algae, light micrograph
Pediastrum green algae. Light micrograph of a Pediastrum sp. green alga. Members of this genus are non-motile algae that live in freshwater environments

Morning Glory Pool, Yellowstone National Park, Wyoming, USA. This geothermal pool is warmed by the volcanic activity beneath it

Epistylis protozoan colony on algae. Light micrograph of a colony of Epistylis sp. protozoa (centre right) attached to a green algae filament (lower left)

Diatoms, light micrograph. Diatoms are a group of photosynthetic, single-celled algae containing about 10, 000 species. They form an important part of the plankton at the base of the marine

Melosira sp diatoms, light micrograph
Diatoms. Light micrograph of Melosira monoliformis freshwater diatoms. Diatoms are a group of photosynthetic, single-celled algae containing about 10, 000 species

Pleurosigma sp diatoms, light micrograph
Diatoms. Differential interference contrast micrograph of Pleurosigma angulatum marine diatoms. Diatoms are a group of photosynthetic, single-celled algae containing about 10, 000 species

Fossil diatoms, light micrograph. Diatoms are a group of photosynthetic, single-celled algae containing about 10, 000 species

Pleurosigma sp diatom, light micrograph
Diatom. Light micrograph of Pleurosigma angulatum marine diatoms. Diatoms are a group of photosynthetic, single-celled algae containing about 10, 000 species

Glacial meltwater, Switzerland
Glacial meltwater. Algae growing in a stagnant pond of meltwater left behind by the Aletsch Glacier. The Aletsch Glacier is the largest glacier in the Alps

Bacteria circadian clock protein molecule. Computer model showing the molecular structure of the KaiC protein found in cyanobacteria (blue-green algae)

Red algae farming. Industrial facility for growing red algae (phylum Rhodophyta). Many forms of red algae are a traditional part of European and Asian cuisine

Algae, SEM
Algae. Coloured scanning electron micrograph (SEM) of single-celled algae (green). Magnification: x4000 when printed 10 centimetres wide

Coccoliths, SEM
Coccoliths, coloured scanning electron micrograph (SEM). Coccoliths are individual plates of calcium carbonate formed by coccolithophores (single-celled algae)

Green algae, light micrograph
Green algae. Fluorescent light micrograph of the green filamentous alga Klebsormidium sp.. Chlorophyll, the pigment responsible for photosynthesis, is red

Volvox colonies, light micrograph
Volvox colonies. Light micrograph of colonies of the freshwater green alga Volvox aureus. containing several asexual daughter colonies

Growing algae for fish food. Nannochloropsis sp. algae (green) being grown at a fishery. Once grown the algae is used to feed fish. Photographed at the Maagan Michael kibbutz, Coastal Plains, Israel

Selection of diatoms, SEM
Selection of diatoms, coloured scanning electron micrograph (SEM). Diatoms are single-celled photosynthetic algae, of which there are about 100, 000 species

Coscinodiscus diatom, SEM
Coscinodiscus diatom. Coloured scanning electron micrograph (SEM) of a Coscinodiscus diatom (red). This is a marine diatom

Skeleton shrimp and mussels
Skeleton shrimp (Caprella septentrionalis) and blue mussels (Mytilus edulis) on a brown algae (Laminaria sp.) frond

Volcanic lakes, New Zealand
Volcanic lakes. These are the Emerald Lakes in Tongariro National Park, on New Zealands North Island. The Tongariro National Park is the oldest national park in New Zealand

Kelp farming, Zanzibar
Kelp farming. Woman harvesting kelp (seaweed) being grown off the coast of Zanzibar. Introduced to Zanzibar from the Philipines in 1988, this industry provides work for hundreds of islanders

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"Exploring the Intricate World Beauty" Immerse yourself in the captivating artistry of diatom algae, as depicted by Ernst Haeckel. These microscopic organisms showcase their intricate structures and mesmerizing patterns, reminding us of the boundless creativity found in nature. Pressed seaweed specimens C016 / 6127 offer a glimpse into the diverse forms and textures that algal species can take. From delicate filaments to robust fronds, each specimen tells a unique story of adaptation and survival in marine ecosystems. Behold the beauty of calcareous phytoplankton through scanning electron microscopy (SEM). The exquisite details captured reveal their ornate shells and elaborate architecture, serving as a testament to their vital role in oceanic food webs. Discosphaera tubifera, a coccolithophore, enchants with its spherical shape adorned by intricate calcium carbonate plates. This tiny organism plays an essential part in carbon cycling and contributes to the stunning white cliffs seen along some coastlines. Dictyota dichotoma showcases its elegant branching structure, exemplifying how algae can create complex habitats for other marine organisms. Its presence enriches coastal ecosystems while providing shelter for countless creatures. Diatoms take center stage once again under SEM's magnifying lens. Their symmetrical siliceous skeletons exhibit remarkable diversity – from star-shaped patterns to delicate lace-like designs – showcasing nature's endless ingenuity. Marvel at Fucus bulbosus or kelp's majestic presence as it sways gracefully beneath ocean currents. These large brown algae provide refuge for numerous marine species while contributing to nutrient cycling within coastal environments. Microcystis blue-green alga captivates with its vibrant hue amidst freshwater bodies. Though often associated with harmful algal blooms, this organism also serves ecological functions such as nitrogen fixation and oxygen production. Witness yet another diatom masterpiece through SEM imagery – their intricately sculpted shapes and delicate ornamentation never cease to amaze.