Blog

Thecacera pikachu: the 'Pikachu nudibranch' finally gets its name (East Timor, 2026)

Jun 30, 2026

Aeolidiidae revised — Novaeolidiella janae and a cryptic Aeolidiella avatar

Jun 29, 2026

A new Anteaeolidiella (A. decorus) from China — and also found in Japan

Jun 28, 2026 ♥1

Hantazuia: three new sea slugs (including one named after me)

Jun 27, 2026

A new Pseudobornella from China — and rethinking what we call P. orientalis in Japan

Jun 26, 2026

Soft-sediment Fionidae get a major revision — and several Indo-Pacific "sp." finally get names

Jun 25, 2026

Kanoko-kisewata, previously treated as a variant of karasu-kisewata, is now a separate species

Jun 24, 2026

Komon-umiushi split into two species (Goniobranchus aureopurpureus + G. cf. variatus)

Jun 21, 2026

Part of Thordisa moves to a new genus Avaldesia — and good luck telling them apart in photos

Jun 19, 2026

Okenia gets blown apart — Bermudella, Cargoa, Ceratodoris resurrected, Naisdoris erected

Jun 18, 2026

Kotohime-umiushi, globally treated as one species, is at least five

Jun 17, 2026

Polycera nimbsi — a Polycerinae paper adds three species and one new genus

Jun 16, 2026

Kaloplocamus ramosus is at least two species — K. albopunctatus described, K. japonicus resurrected

Jun 14, 2026

The Spanish dancer (Hexabranchus) is now six species

Jun 13, 2026

Rambling notes on pineapple-umiushi (Halgerda willeyi) and friends

Jun 12, 2026

Hypselodoris cerisae vs H. krakatoa — what's the difference?

Jun 11, 2026

Nekojita-umiushi is no longer in Goniodoris — it moves to the resurrected Pelagella

Jun 10, 2026

New Dendronotus paper from the North Atlantic

Jun 7, 2026

Minami-hyomon-umiushi finally gets a scientific name — and a tangle of Japanese vernaculars

Jun 6, 2026

Maldives sea slug paper — striking how many of the species also occur in Japan

Jun 5, 2026