In Prochonias, as in the modern genus of Brazil, Hydromedusa, the ileum is fastened by a great suture to the shell above, right on the line of junction of two rib bones. But the bones of the front ...

The Mount mauler has never been conclusively identified. Prime suspects are a microscopic jellyfish called hydromedusae or the larval stage of an insect called phycosecis limbata. Last week's ...

The majority of stings from jellyfish at Auckland's beaches during summer are due to microscopic jellyfish known as Hydromedusae. Auckland beach-goers are being told not to worry about small ...

3rd place winner of 2021 "During a spring dive at a depth of about 6 meters, I immortalized this small hydromedusa of the ...