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FIGURE 3 in Morphological and molecular diversity of rissoellids (Mollusca, Gastropoda, Heterobranchia) from the Northwest Pacific island of Hokkaido, Japan

FIGURE 3. Living specimens. (A–D) Rissoella elatior. (E–F) Rissoella golikovi. (G–I) Rissoella japonica n. sp. (J–K) Rissoella sp. 1.

FIGURE 2 in Morphological and molecular diversity of rissoellids (Mollusca, Gastropoda, Heterobranchia) from the Northwest Pacific island of Hokkaido, Japan

FIGURE 2. Maximum-likelihood tree analysis of the COI sequences of Rissoella from Hokkaido, Japan. Scale bars represent raw percentage sequence divergence. MOTUs are indicated with letters in parenthesis.

FIGURE 5 in Morphological and molecular diversity of rissoellids (Mollusca, Gastropoda, Heterobranchia) from the Northwest Pacific island of Hokkaido, Japan

FIGURE 5. SEM micrographs of Rissoella golikovi. (A) Apertural view of the shell. (B) Apical view of the protoconch. (C) Detail of the protoconch showing suture. (D) Inner face view of the operculum. (E–F) Radula. (G) Central teeth.

FIGURE 4 in Morphological and molecular diversity of rissoellids (Mollusca, Gastropoda, Heterobranchia) from the Northwest Pacific island of Hokkaido, Japan

FIGURE 4. SEM micrographs of Rissoella elatior. (A) Apertural view of the shell. (B) Apical view of the protoconch. (C) Detail of the protoconch showing the suture. (D) Inner face view of the operculum. (E) Radula. (F) Central teeth. (G) Lateral teeth. (H) Inner and outer marginal teeth.

FIGURE 6 in Morphological and molecular diversity of rissoellids (Mollusca, Gastropoda, Heterobranchia) from the Northwest Pacific island of Hokkaido, Japan

FIGURE 6. SEM micrographs of Rissoella japonica n. sp. (A) Apertural view of the shell. (B) Apical view of the protoconch. (C) Detail of the protoconch showing the suture. (D) Inner face view of the operculum. (E) Radula. (F) Central teeth. (G) Lateral and marginal teeth.

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Data Sets for: Trace elements in aerosol from Northwest Pacific marginal sea, Indian Ocean and South Pacific to Antarctica: Spatial variability and source identification

<p>This dataset includes the concentrations of trace elements in aerosols, along with location and time information, collected during a cruise from November 2021 to April 2022. The cruise covered the Pacific, the Indian Ocean, the Southern Ocean.</p>

Fig. 15 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 15 Ziminella vrijenhoeki Valdés et al. 2018, MIMB 42255, external morphology and SEM micrographs of internal morphology. A, dorsal view. B, ventral view. C, living specimen in natural environment. D, jaw masticatory border. E, details of denticulation of

Fig. 14 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 14 Results of molecular analysis of different aeolid groups. A, genus Cuthona, COI haplotype network produced with TCS method in PopART. Colors of circles refer to the geographic origin of each haplotype. The relative size of circles is proportional to the number of sequences of that same haplotype. B, molecular phylogenetic hypothesis of genus Cuthona, maximum likelihood, concatenated dataset of three markers (COI + 16S + H3), species-level clades and outgroups are collapsed to a single branch, except Cuthona and Bohuslania species. Numbers above branches indicate posterior probabilities from Bayesian inference, numbers below branches, bootstrap support from maximum likelihood. C, molecular phylogenetic

Fig. 16 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 16 Zeusia herculea (Bergh, 1894), MIMB 42254, external morphology and SEM micrographs of internal morphology. A, dorsal view. B, ventral view. C, living specimen in natural environment. D, posterior radular portion. E, anterior radular portion. F, G,

Fig. 13 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 13 Cuthona sp., MIMB 42232, external morphology and SEM micrographs of internal morphology. A, living specimen. B, radula. C, rachidian teeth. Scale bars: A, 5 mm; B, 100 µm; C, 20 µm. Living photo by Anastassya Maiorova

Fig. 12 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 12 Dendronotus kurilensis sp. nov., external morphology and SEM micrographs of internal morphology. A, holotype MIMB 42237, dorsal view. B, MIMB 42237, lateral view from left. C, holotype MIMB 42237, lateral view from right. D, paratypes MIMB 42235. E, paratype MIMB 42238. C, MIMB 42235b, right jaw plate. D, MIMB 42235b, denticulation of masticatory border. E, MIMB

Fig. 10 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 10 Dendronotus patricki Stout et al. 2011, external morphology and SEM micrographs of internal morphology. A, MIMB 42239. B, MIMB 42240. C, MIMB 42241, dorsal side. D, MIMB 42241, ventral side. E, MIMB 42241, left jaw plate. F, MIMB 42241, denticulation of masticatory border. F, MIMB 42241, radula. G, MIMB 42241, rachidian and lateral teeth, posterior radular portion. H, MIMB 42241, rachidian tooth, posterior radular portion. J, MIMB 42241, lateral teeth, posterior radular portion. Scale bars: A–D, 5 mm; E, G, H, 200 µm; F, I, J, 100 µm. Living photos by Anastassya Maiorova

Fig. 11 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 11 Dendronotus zakuro Martynov et al. 2020, external morphology and SEM micrographs of internal morphology. A, MIMB 42244. B, MIMB 42243. C, MIMB 42244, left jaw plate. D, MIMB 42244, denticulation of masticatory border. E, MIMB 42244, posterior radular portion. F, MIMB 42244, middle radular portion. G, MIMB 42244, anterior radular portion. Scale bars: A, B, 5 mm; C, 500 µm; D, 20 µm; F–J, 100 µm. Living photos by Anastassya Maiorova

Fig. 9 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 9 Results of molecular analysis of genus Dendronotus. A, molecular phylogenetic hypothesis, maximum likelihood, concatenated dataset of four markers (COI+ 16S + H3 + 28S), species-level clades and outgroups are collapsed to a single branch, except target species. Numbers above branches indicate posterior probabilities from Bayesian inference, numbers below branches, bootstrap support from maximum likelihood. B, Dendronotus dalli, COI haplotype network produced with TCS method in PopART. Colors of circles refer

Fig. 8 Dendronotus dalli Bergh, 1879 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 8 Dendronotus dalli Bergh, 1879, external morphology and SEM micrographs of internal morphology. A, MIMB 42234a. B, MIMB 42234c. C, MIMB 42233. D, MIMB 42234c, right jaw plate. E, MIMB 42234c, denticulation of masticatory border. F, MIMB 42234c, radula. G—MIMB 42234c, rachidian tooth, posterior radular portion. H, MIMB 422342c, lateral teeth, posterior radular portion. Scale bars: A–C, 10 mm; D, F, 500 µm; E, G, H, 50 µm. Living photos by Anastassya Maiorova

Fig. 7 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 7 Genus Tritonia, external morphology and SEM micrographs of internal morphology. A, Tritonia tetraquetra MIMB 42248. B, Tritonia tetraquetra MIMB 42249. C, Tritonia psoloides MIMB 42245 in natural environment collected by ROV. D, Tritonia tetraquetra MIMB 42246 in natural environment; a specimen is marked by a white arrow. E, Tritonia tetraquetra MIMB 42246, rachidian and inner lateral teeth. F, Tritonia tetraquetra MIMB 42246, middle lateral teeth. G, Tritonia tetraquetra MIMB 42246, outer lateral teeth. Scale bars: A, B, 5 mm. E, F, 100 µm; G, 200 µm. Living photos by Anastassya Mayorova and team of ROV "Komanch"

Fig. 6 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 6 Colga pacifica (Bergh, 1894) MIMB 42231, external morphology and SEM micrographs of internal morphology. A, B, living specimens. C, middle radular portion. Scale bars: A, B, 5 mm, C, 500 µm. Living photo by Anastassya Maiorova

Fig. 5 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 5 Cadlina sp. MIMB 42230, external morphology and SEM micrographs of internal morphology. A, dorsal view of living specimen, ca. 15 mm in length. B, labial cuticle. C, details of labial cuticle. D, radula. E, rachidian and innermost lateral teeth. F, inner lateral teeth. G, outer lateral teeth. Scale bars: A, 5 mm; B, D, 300 µm; C, 10 µm; E–G, 30 µm. Living photo by Anastassya Maiorova

Fig. 4 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 4 Molecular phylogenetic reconstructions of studied groups. A, genus Bathydoris, Bayesian inference, concatenated dataset of four markers (COI+ 16S + H3 + 28S). B, genus Cadlina, maximum likelihood, concatenated dataset of four markers (COI+ 16S + H3 + 28S), species-level clades and outgroups (Dendrodoris and Aldisa) are collapsed to a single branch. C, genus Tritonia, maximum likeli-

Fig. 3 Reproductive system. A in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 3 Reproductive system. A, Bathydoris antoni sp. nov., general view. B, Bathydoris antoni sp. nov., male part and female gland mass partly removed. C, Dendronotus patricki, MIMB 42240. D, Dendronotus kurilensis sp. nov., paratype MIMB 42238. Abbreviations: