[1] The genus is distinguishable from other Castostylid species by a terminal club on each oral arm without filaments and a canal system featuring a narrow, wide-meshed intra-circular network of interconnected vessels.

Four species belong to the genus Crambionella (Stiasny, 1921): C. annandalei (Rao, 1931), C. helmbiru (Nishikawa, Mulyadi & Ohtsuka, 2014), C. orsini (Vanhöffen, 1888) and C. stuhlmanni (Chun, 1896).

[1] Many nations bordering the Indian Ocean harvest Crambionella species for food, with Japan, the Philippines, Vietnam, Malaysia, Thailand, Indonesia, Singapore, and Myanmar being significant consumers.

[4] Crambionella along with other species of jellyfish in the classes Scyphozoa, Cubozoa and Hydrozoa are integral components of marine biodiversity.

[5] Their capability to cycle nutrients and swiftly store carbon through decomposed blooms underscores their significance as a crucial component of the ocean environment.

There is a link to the decline of coastal marine ecosystems, with reports of increased occurrences globally, potentially stemming from overfishing and human activities.

[7][8] Blooms can have negative economic impact by disrupting various industries such as commercial fisheries, tourism, and coastal power production, as seen in the significant presence of C. orsini in the Iranian fishing grounds in May 2002.

[4] In nature, it exhibits transparent-white coloration, including light-brown mouthlets and appendages on the oral arms, and cream-colored gonads.

Specifically, in India it has been reported to be in Madras and Gulf of Mannar of Tamil Nadu, Pondicherry, Kerala, and Agatti Island of Lakshadweep.

[1] In studies carried out along the Bay of Bengal, C. annandalei displayed marked seasonal fluctuations in both its abundance and growth rates.

These jellyfish have substantial, tough bodies with thick umbrellas, resulting in a desirable crunchy texture when processed.

[13] C. annandalei is caught in the largest quantities in the Andhra Pradesh state of India, and is one of the main supporters of the commercial jellyfish industry in the region.

[11] Given its status as an edible species consumed in multiple Asian nations, C. annandalei represents a promising resource deserving of further investigation and exploration.

[9] Both species are found for sale in markets of the nations Japan, Philippines, Vietnam, Malaysia, Thailand, Indonesia, Singapore, and Myanmar.

[8] Additionally, jellyfish blooms disrupt commercial fisheries, tourism, and coastal power production, leading to predominantly negative effects on these industries and ecosystems.

[7] In the initial weeks of May 2002, fishermen along the western shore of Gwatar Bay noticed a significant presence of the medium-sized brown jellyfish, C. orsini.