Cleavage period

Cleavage period including stages from two cell to eight cell.

Brine shrimp

I got some brine shrimp cyst (Artemia salina) for fish feeding and got to witness its hatching.

Brachiolaria larva

Brachiolaria is the second stage of larval development in many starfishes. it has bilateral symmetry.

Obelia colony

Obelia is a marine colony of hydroid organisms. Each colony of Obelia consists of a horizontal thread-like root called hydrorhiza which is attached to a weed or any substratum ,Obelia is a marine colony of hydroid organisms.

Ovule of Hibiscus and its transverse section

These are the flower’s eggs, located inside the ovary. Upon fertilization by pollen, they will eventually grow into a seed. In fruit plants, pollen will not only spark the growth of a seed, but a surrounding fruit as well.

An Aurelia scyphistoma

The scyphistoma is a sessile, larval (non-reproductive) stage of Aurelia, which in time turns into a strobila. Scyphistoma sometime multiplies by budding from stolons. After some time scyphistoma undergoes transverse fission at its oral end, a process called strobilation.  .

Bipinnaria larva

A bipinnaria is the first stage in the larval development of most starfish. It is free-living, swimming as part of the zooplankton. When it initially forms, the entire body is covered by cilia.

Workshop on Capacity building to enhance apiculture productivity through melissopalynological training using foldscope at Kumirmari, Sundarban in association with Sundarban Green Environment Association on 5th January 2019

On 5th January, Department of Environmental Science, University of Calcutta organised a workshop on The Capacity building to enhance apiculture productivity through melissopalynological training using foldscope in collaboration with Sundarban Green Environment Association at Kumirmari, Sundarban. At 9 AM, local beekeepers of Kumirmari, attended the workshop.  Many beekeepers brought sample honeys in a sterilized container…

ICAR-NBAIR conducts workshop for Mynsain farmers

A daylong workshop for farmers to attest the utility of a ‘paper microscope’ in advocating management practices against microscopic pests in organic farming was conducted by ICAR-National Bureau of Agricultural Insect Resource, Bengaluru in association with ICAR Complex for NEH Region, Barapani at Mynsain village in Ri Bhoi District of Meghalaya in December 2018. Around…

Workshop on Foldscope at Murguma, Purulia at Nature study Camp in collaboration with Howrah Vigyan Chetna Samannaya

A workshop named “Exploring Invisible World with Foldscope” at Murguma, Purulia at morning session of 27th December, 2018 was organized by foldscope team of University of Calcutta, Department of Environmental Science in collaboration with Howrah Vigyan Chetna Samannaya on 27th December, 2018. All the students of Nature Study Camp were present at the workshop. They…

Fungi on damp wall

Aspergillus niger and Aspergillus flavus are isolated from damp walls. The cement walls of the constructions with internal seepage either due to leakages or air conditioners also support the fungal growth. The last four images are taken using foldscope microscope. Aspergillus niger Aspergillus niger Aspergillus flavus Aspergillus flavus


An amoeba, is a term generally used to describe a single celled eukaryotic organism that has no definate shape and that moves by means of pseudopodia. Pseudopodia or pseudopods are temporary projections of the cell and the word literally means “false feet”. The cell uses the pseudopodia as a means of locomotion. The plural of amoeba is…


Cyclops are tiny crustaceans of the family Cyclopidae, also called water fleas. They are usually found in stagnant bodies of fresh water such as wells and ponds in poor agricultural communities in rural or periurban areas. Cyclops are just visible (0.5–2 mm) and can be recognized by their jerky mode of swimming. They feed on…


Oikopleura dioca, the appendicularians are hermaphrodites and the gonads occupy a relatively large part of the body in mature individuals, sometimes producing the curvature of the trunk of the animal. The length of the tail is three times the length of the body. The tail has a neural chord or notochord, covered by a well-developed…