#hydrozoa

[strawlessandbraless]

Giant Siphonophores really out here doing the most, and somehow also the least

Love to sea it

[taxonomytournament]

Taxonomy Tournament: Cnidarian Finale

Hydrozoa. This class is of predatory cnidarians, some of which are colonial, incllude hydras and the Portuguese Man o' War

Hexacorallia. This class is made up of aquatic animals with 6-fold symmetry. It includes stony corals and sea anemones

[life-on-our-planet]

The Portuguese Man O’ War floats with the help of a gas filled bladder, topped by a vertical membrane serving as a sail. Long threads trail behind it, some as many as 30 meters long, and each armed with many thousands of stinging cells. BBC Earth

[biologist4ever]

Hydra Vulgaris gets its name from the Lernaean Hydra, a monster from Greek mythology that guarded an entrance to the underworld.

[snototter]

A crowd of sea rafts, or by-the-wind-sailors (Velella velella) in Morro Bay, California, USA

by Gregory "Slobirdr" Smith

[smithsonianlibraries]

Illustrations of Olindias tenuis anatomy from Alfred Goldsborough Mayer’s Medusæ of the Bahamas (1904).

Full text here.

[eddieintheocean]

so far this is the product of my two hour marine invertebrates lecture laast friday

i have so many notes n that and im trying to get them into files so that people can read them should they want to

[strawlessandbraless]

Siphonophore rainbow 🌈

Love to sea it 🌊

[taxonomytournament]

Taxonomy Tournament: Cnidarians

Scyphozoa. This class is known as the true jellyfish, with a planktonic medusa form and bottom-dwelling polyp form

Hydrozoa. This class is of predatory cnidarians, some of which are colonial, incllude hydras and the Portuguese Man o' War

[kaelula-sungwis]

Polyorchis karafutoensis by Alexander Semenov

[biologist4ever]

Hydra Vulgaris Feeding

[noosphe-re]

Magical, serpentine creature of the deep sea filmed by scientists

At first glance, the snaky siphonophore may look like an immensely long — upwards of 160 feet — creature. (Mark Kaufman)

Although a siphonophore may appear to be an individual organism, each specimen is in fact a colonial organism composed of medusoid and polypoid zooids that are morphologically and functionally specialized. (Wikipedia)

[snototter]

A Portuguese man o’war (Physalia physalis) on Capelinhos beach, Faial island, Azores

by ChilliPepper0713

[noncompliantcyborg]

First Observation for this siphonophore species on iNaturalist! Dimophyes arctica

Found this beautiful siphonophore the other night and got the exciting honor of being the first observation for it on iNaturalist. I almost didn't bring my camera that night but I'm so glad I did. (It is so hard to get good pics on a moving dock in the dark and this guy was so little - I'd say the nectophore was less than 1 cm).

If you wanna watch a video of how it moves - you can find that here: https://youtu.be/f2cnCMtm6iU

[vickysaurus]

Sponges (and hydrozoa) of the Jurassic and Cretaceous.

[alihsi]

Sciartober Day 11: For the prompt incomplete, a rather simplistic hydra for a low energy day. It's a Cnidarian that has no medusa stage and stays in the polyp stage. They reproduce asexually by budding. Pentel brushpen and Prismacolor fine-line marker on Canson mixed media.