Menu

Ireland's sailing, boating & maritime magazine

RBC Brewin Dolphin proudly supporting Afloat and Irish Boating

Dingle Aquarium Honours Jellyfish Pioneer Maude Delap

2nd June 2026
Jellyfish Trailblazer — Moon jellyfish drift through a display at Dingle Oceanworld dedicated to Valentia Island naturalist Maude Delap, whose pioneering work made her the first person to breed jellyfish successfully in captivity.
Jellyfish Trailblazer — Moon jellyfish drift through a display at Dingle Oceanworld dedicated to Valentia Island naturalist Maude Delap, whose pioneering work made her the first person to breed jellyfish successfully in captivity Credit: Domnick Walsh Photography

Hundreds of jellyfish are being bred at Dingle Oceanworld in Co Kerry using techniques pioneered more than a century ago by Valentia Island naturalist Maude Delap.

The aquarium has dedicated its jellyfish display to Delap, who became the first person in the world to successfully rear jellyfish in captivity. Her groundbreaking work in the late 19th century helped scientists understand the complex life cycle of jellyfish and laid the foundations for modern husbandry techniques used in aquariums today.

Spotted Success — Species reared at Dingle Oceanworld reflect techniques first developed by Maude Delap more than a century ago, helping unlock the mysteries of jellyfish development. Photo: Dominick Walsh PhotographySpotted Success — Species reared at Dingle Oceanworld reflect techniques first developed by Maude Delap more than a century ago, helping unlock the mysteries of jellyfish development. Photo: Dominick Walsh Photography

Visitors to Oceanworld can now see large numbers of jellyfish raised on-site using methods inspired by Delap's pioneering research.

Marine biologist Kevin Flannery said Delap's achievements continue to influence marine science more than 100 years after her discoveries. "Maude Delap's remarkable work transformed our understanding of jellyfish biology," he said. "Her innovative methods remain the foundation of modern jellyfish husbandry and continue to inspire marine scientists around the world."

Living Legacy — Hundreds of jellyfish are now bred in captivity at Dingle Oceanworld, continuing a scientific tradition pioneered by Kerry naturalist Maude Delap in the late 1800s. Photo: Dominick Walsh PhotographyLiving Legacy — Hundreds of jellyfish are now bred in captivity at Dingle Oceanworld, continuing a scientific tradition pioneered by Kerry naturalist Maude Delap in the late 1800s. Photo: Dominick Walsh Photography

Born and raised on Valentia Island, Delap conducted much of her research from her family home, carefully documenting the development and behaviour of jellyfish species at a time when few women were recognised in scientific research. Her successful breeding of jellyfish in captivity marked a major scientific breakthrough and secured her place in marine science history.

Today, her legacy lives on in Kerry, where a new generation of marine biologists continues to build on her work.

Afloat.ie Team

About The Author

Afloat.ie Team

Email The Author

Afloat.ie is Ireland's dedicated marine journalism team.

Have you got a story for our reporters? Email us here.

We've got a favour to ask

More people are reading Afloat.ie than ever thanks to the power of the internet but we're in stormy seas because advertising revenues across the media are falling fast. Unlike many news sites, we haven't put up a paywall because we want to keep our marine journalism open.

Afloat.ie is Ireland's only full-time marine journalism team and it takes time, money and hard work to produce our content.

So you can see why we need to ask for your help.

If everyone chipped in, we can enhance our coverage and our future would be more secure. You can help us through a small donation. Thank you.

Direct Donation to Afloat button

Marine Wildlife Around Ireland One of the greatest memories of any day spent boating around the Irish coast is an encounter with marine wildlife.  It's a thrill for young and old to witness seabirds, seals, dolphins and whales right there in their own habitat. As boaters fortunate enough to have experienced it will testify even spotting a distant dorsal fin can be the highlight of any day afloat.  Was that a porpoise? Was it a whale? No matter how brief the glimpse it's a privilege to share the seas with Irish marine wildlife.

Thanks to the location of our beautiful little island, perched in the North Atlantic Ocean there appears to be no shortage of marine life to observe.

From whales to dolphins, seals, sharks and other ocean animals this page documents the most interesting accounts of marine wildlife around our shores. We're keen to receive your observations, your photos, links and youtube clips.

Boaters have a unique perspective and all those who go afloat, from inshore kayaking to offshore yacht racing that what they encounter can be of real value to specialist organisations such as the Irish Whale and Dolphin Group (IWDG) who compile a list of sightings and strandings. The IWDG knowledge base has increased over the past 21 years thanks in part at least to the observations of sailors, anglers, kayakers and boaters.

Thanks to the IWDG work we now know we share the seas with dozens of species who also call Ireland home. Here's the current list: Atlantic white-sided dolphin, beluga whale, blue whale, bottlenose dolphin, common dolphin, Cuvier's beaked whale, false killer whale, fin whale, Gervais' beaked whale, harbour porpoise, humpback whale, killer whale, minke whale, northern bottlenose whale, northern right whale, pilot whale, pygmy sperm whale, Risso's dolphin, sei whale, Sowerby's beaked whale, sperm whale, striped dolphin, True's beaked whale and white-beaked dolphin.

But as impressive as the species list is the IWDG believe there are still gaps in our knowledge. Next time you are out on the ocean waves keep a sharp look out!