Description: This small hydromedusa has about 20-70 unbranched tentacles of similar size (40-72 when mature), which originate evenly around the margin of the bell.

Oct 25, 2019 · Most species in the literature also have four small tentacles (oral tentacles) surrounding the mouth, and these tentacles are usually dichotomously branched. The gonads, producing sperm …

Large transparent hydromedusa to 8 cm diameter; numerous radial canals bearing gonads; many tentacles around margin of bell; bioluminescent. Intermittently common in waters offshore of kelp …

Paratype 1: USNM 1517422: whole specimen preserved in 99% ethanol; 0–3 m depth; 15–17th July 2018; female, umbrella diameter 12 mm; radial canals 19; tentacles 31; same locality and collectors …

Feb 9, 2023 · In this study, we present new in situ video records for Trachymedusae (Hydrozoa), Ascidiacea (Tunicata), and Tentaculata (Ctenophora) taken by submersible and supporting landers …

Four radial canals connect the stomach to an additional, circular canal running around the base of the bell, just above the tentacles. Striated muscle fibres also line the rim of the bell, allowing the animal …

Jan 14, 2020 · Eight linear to sinuous, flattened, partially pendant gonads occur on the eight radial canals; not known to have medusa buds; centripetal canals absent; manubrium with a well …

Description: This bell-shaped hydromedusa (usually just slightly broader than tall) has about 60-80 unbranched tentacles which evenly spaced around the margin of the bell.

Jul 2, 2024 · The specimens had the following morphological characteristics: marginal warts and tentacular bulbs with lateral cirri and without adaxial papillae, a mouth with simple lips, four simple …

Hydromedusae (Cnidaria: Hydrozoa) are usually small, transparent, gelatinous, planktonic organisms that are frequently seasonal, produced during the life cycle of hydroids.