Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (870,053 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Gustaaf Hallegraeff
harmful algal blooms
fish kills
shellfish toxins
ballast water
Metrics
H-Index
i10 Index
Citation
83
248
28,567
* Rankings
Ranking Based On Selection: 2
Leonid Danyushevsky
laser ablation ICPMS
magma genesis
petrology
modelling magma crystallisation
Metrics
H-Index
i10 Index
Citation
73
168
22,056
* Rankings
Ranking Based On Selection: 3
NL Bindoff
Oceanography
Physical Oceanography
Climate Change
Metrics
H-Index
i10 Index
Citation
70
178
74,953
* Rankings
Ranking Based On Selection: 4
Catriona L Hurd
Seaweeds
Carbon Dioxide Removal
Ocean Acidification
Nitrogen metabolism
Water motion
Metrics
H-Index
i10 Index
Citation
67
149
13,426
* Rankings
Ranking Based On Selection: 7
Jeffrey M Leis
ichthyology
larval fish biology
phylogeny
life history studies
Metrics
H-Index
i10 Index
Citation
59
129
14,479
* Rankings
Ranking Based On Selection: 9
Mike Coffin
Antarctic Geology
Climate Change And Global Warming
Exploration Seismology
Geology
Marine Geology & Geophysics
Metrics
H-Index
i10 Index
Citation
49
87
10,878

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* Rankings
Ranking Based On Selection: 12
Eric J Woehler
Seabird and shorebird conservation
coastal management
Metrics
H-Index
i10 Index
Citation
43
103
7,222
* Rankings
Ranking Based On Selection: 15
Joanna C Ellison
vulnerability assessment
coastal geomorphology
Pacific islands
Metrics
H-Index
i10 Index
Citation
36
76
10,229
* Rankings
Ranking Based On Selection: 16
Robert Strzepek
Biological Oceanography
Marine Biogeochemistry
Phytoplankton Ecophysiology
Metrics
H-Index
i10 Index
Citation
31
42
6,915
* Rankings
Ranking Based On Selection: 17
Karen A Alexander
marine & Antarctic governance
natural resource conflict
values & interests
stakeholder engagement
science communication
Metrics
H-Index
i10 Index
Citation
30
44
2,838
* Rankings
Ranking Based On Selection: 20
Stuart Corney
Physical modelling
climate modelling
ecosystem modelling
impacts of climate change on Southern
Metrics
H-Index
i10 Index
Citation
27
50
4,535
* Rankings
Ranking Based On Selection: 21
Jacquomo Monk
Conservation Science
Fish Ecology
Mesophotic Ecosystems
Biodiversity Monitoring
Marine Imagery
Metrics
H-Index
i10 Index
Citation
24
42
2,100
* Rankings
Ranking Based On Selection: 22
Martin Jutzeler
Submarine volcanism
pumice raft
density current
pyroclast
Kermadec
Metrics
H-Index
i10 Index
Citation
22
36
1,333
* Rankings
Ranking Based On Selection: 23
Shuhong Chai
Ocean Engineering
Subsea Engineering
Hydrodynamics
AUV
Metrics
H-Index
i10 Index
Citation
21
43
1,472
* Rankings
Ranking Based On Selection: 26
Andrew Fischer
biological oceanography
remote sensing
estuarine processes
Metrics
H-Index
i10 Index
Citation
21
26
1,615
* Rankings
Ranking Based On Selection: 27
Amelie Meyer
Physical Oceanography
Polar Oceanography
Sea Ice
Ocean mixing
Climate Dynamics
Metrics
H-Index
i10 Index
Citation
19
25
1,591
* Rankings
Ranking Based On Selection: 28
Heidi J Auman
Seabird ecology
marine biology
plastic ingestion
toxicology
science communication
Metrics
H-Index
i10 Index
Citation
18
20
1,702
* Rankings
Ranking Based On Selection: 31
Jean Roch Nader
Ocean Engineering
Marine Renewable Energy Systems
Offshore & Coastal Structures
Hydrodynamic
Metrics
H-Index
i10 Index
Citation
16
27
1,000
* Rankings
Ranking Based On Selection: 32
Christina Schallenberg
ocean optics
phytoplankton fluorescence
iron in the ocean
biogeochemistry
phytoplankton physiology
Metrics
H-Index
i10 Index
Citation
16
20
1,145
* Rankings
Ranking Based On Selection: 33
Paul Van Ruth
Ecology
Food Web Dynamics
Drivers of ecosystem change
Metrics
H-Index
i10 Index
Citation
16
20
1,139
* Rankings
Ranking Based On Selection: 34
Michelle Grech
fatigue
workload
human centred design
human systems integration
safety culture
Metrics
H-Index
i10 Index
Citation
15
16
1,344
Olivia J Johnson
Marine Ecology
Marine Biodiversity
Climate Change
Fisheries & Ecosystem Management
Metrics
H-Index
i10 Index
Citation
7
5
208
Amelia E Fowles
Marine Ecology
Biodiversity conservation
Environmental Management
Urban Pollution
Metrics
H-Index
i10 Index
Citation
6
6
111
Camille Couzi
Physical oceanography
Acoustics
Marine Instrumentation
Data processing
Metrics
H-Index
i10 Index
Citation
6
5
116
Malcolm S Johnson
coastal resource management
island studies
human ecology mapping
Metrics
H-Index
i10 Index
Citation
4
4
67
Paula Andrea Ruiz-Ruiz
Marine Ecology
Environmental Science
Marine Biology
Physiology
Underwater Soundscape
Metrics
H-Index
i10 Index
Citation
4
1
35
Joana Bento De Almeida
marine biology
marine ecology
climate change
conservation
invertebrates
Metrics
H-Index
i10 Index
Citation
3
2
38
Edie Bishop
Marine ecology
Quantitative ecology
Spatial Ecology
conservation
Metrics
H-Index
i10 Index
Citation
2
1
37
Phuc Le
Marine Environment
Marine Debris
Remote Sensing and GIS
Metrics
H-Index
i10 Index
Citation
2
1
16
Sophia Volzke
Marine Ecology
Ecological Modelling
Marine Predator Biology
Metrics
H-Index
i10 Index
Citation
2
1
14
Ali Motamedinezhad
Ocean Engineering
Hydrodynamics
Hydroelasticity
Multiphase Flows
CFD
Metrics
H-Index
i10 Index
Citation
1
1
37
Fauzi Hardjanto
Ocean wave mechanics
floating structures
marine risers
marine pipelines
Metrics
H-Index
i10 Index
Citation
1
0
2
Rankings
Ranking Based On Selection: 1
Gustaaf Hallegraeff
Metrics
H-Index
i10 Index
Citation Counts
83
248
28,567
harmful algal blooms
fish kills
shellfish toxins
ballast water
Rankings
Ranking Based On Selection: 2
Leonid Danyushevsky
Metrics
H-Index
i10 Index
Citation Counts
73
168
22,056
laser ablation ICPMS
magma genesis
petrology
modelling magma crystallisation
Rankings
Ranking Based On Selection: 3
NL Bindoff
Metrics
H-Index
i10 Index
Citation Counts
70
178
74,953
Rankings
Ranking Based On Selection: 4
Catriona L Hurd
Metrics
H-Index
i10 Index
Citation Counts
67
149
13,426
Seaweeds
Carbon Dioxide Removal
Ocean Acidification
Nitrogen metabolism
Water motion
Rankings
Ranking Based On Selection: 6
Tom Trull
Metrics
H-Index
i10 Index
Citation Counts
63
159
15,656
Rankings
Ranking Based On Selection: 7
Jeffrey M Leis
Metrics
H-Index
i10 Index
Citation Counts
59
129
14,479
ichthyology
larval fish biology
phylogeny
life history studies
Rankings
Ranking Based On Selection: 9
Mike Coffin
Metrics
H-Index
i10 Index
Citation Counts
49
87
10,878
Antarctic Geology
Climate Change And Global Warming
Exploration Seismology
Geology
Marine Geology & Geophysics
Rankings
Ranking Based On Selection: 10
Peter Strutton
Metrics
H-Index
i10 Index
Citation Counts
47
88
8,094

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

Rankings
Ranking Based On Selection: 11
Ian Allison
Metrics
H-Index
i10 Index
Citation Counts
44
116
9,623
Rankings
Ranking Based On Selection: 12
Eric J Woehler
Metrics
H-Index
i10 Index
Citation Counts
43
103
7,222
Rankings
Ranking Based On Selection: 13
Klaus Meiners
Metrics
H-Index
i10 Index
Citation Counts
40
75
5,270
Rankings
Ranking Based On Selection: 14
Roger Proctor
Metrics
H-Index
i10 Index
Citation Counts
40
84
5,164
Rankings
Ranking Based On Selection: 15
Joanna C Ellison
Metrics
H-Index
i10 Index
Citation Counts
36
76
10,229
vulnerability assessment
coastal geomorphology
Pacific islands
Rankings
Ranking Based On Selection: 16
Robert Strzepek
Metrics
H-Index
i10 Index
Citation Counts
31
42
6,915
Biological Oceanography
Marine Biogeochemistry
Phytoplankton Ecophysiology
Rankings
Ranking Based On Selection: 17
Karen A Alexander
Metrics
H-Index
i10 Index
Citation Counts
30
44
2,838
marine & Antarctic governance
natural resource conflict
values & interests
stakeholder engagement
science communication
Rankings
Ranking Based On Selection: 19
Helen Phillips
Metrics
H-Index
i10 Index
Citation Counts
28
46
2,361
Rankings
Ranking Based On Selection: 20
Stuart Corney
Metrics
H-Index
i10 Index
Citation Counts
27
50
4,535
Physical modelling
climate modelling
ecosystem modelling
impacts of climate change on Southern
Rankings
Ranking Based On Selection: 21
Jacquomo Monk
Metrics
H-Index
i10 Index
Citation Counts
24
42
2,100
Conservation Science
Fish Ecology
Mesophotic Ecosystems
Biodiversity Monitoring
Marine Imagery
Rankings
Ranking Based On Selection: 22
Martin Jutzeler
Metrics
H-Index
i10 Index
Citation Counts
22
36
1,333
Submarine volcanism
pumice raft
density current
pyroclast
Kermadec
Rankings
Ranking Based On Selection: 23
Shuhong Chai
Metrics
H-Index
i10 Index
Citation Counts
21
43
1,472
Rankings
Ranking Based On Selection: 24
Jiangang Fei
Metrics
H-Index
i10 Index
Citation Counts
21
33
1,541
Rankings
Ranking Based On Selection: 25
Melanie East
Metrics
H-Index
i10 Index
Citation Counts
21
28
1,784
Rankings
Ranking Based On Selection: 26
Andrew Fischer
Metrics
H-Index
i10 Index
Citation Counts
21
26
1,615
biological oceanography
remote sensing
estuarine processes
Rankings
Ranking Based On Selection: 27
Amelie Meyer
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,591
Physical Oceanography
Polar Oceanography
Sea Ice
Ocean mixing
Climate Dynamics
Rankings
Ranking Based On Selection: 28
Heidi J Auman
Metrics
H-Index
i10 Index
Citation Counts
18
20
1,702
Seabird ecology
marine biology
plastic ingestion
toxicology
science communication
Rankings
Ranking Based On Selection: 30
Cecilia Villanueva
Metrics
H-Index
i10 Index
Citation Counts
17
17
4,158
Rankings
Ranking Based On Selection: 31
Jean Roch Nader
Metrics
H-Index
i10 Index
Citation Counts
16
27
1,000
Ocean Engineering
Marine Renewable Energy Systems
Offshore & Coastal Structures
Hydrodynamic
Rankings
Ranking Based On Selection: 32
Christina Schallenberg
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,145
ocean optics
phytoplankton fluorescence
iron in the ocean
biogeochemistry
phytoplankton physiology
Rankings
Ranking Based On Selection: 33
Paul Van Ruth
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,139
Rankings
Ranking Based On Selection: 34
Michelle Grech
Metrics
H-Index
i10 Index
Citation Counts
15
16
1,344
fatigue
workload
human centred design
human systems integration
safety culture
Rankings
Ranking Based On Selection: 35
Jonathan Duffy
Metrics
H-Index
i10 Index
Citation Counts
14
14
474
Rankings
Ranking Based On Selection: 36
Rita M Franco Santos
Metrics
H-Index
i10 Index
Citation Counts
9
9
1,030
Rankings
Ranking Based On Selection: 37
Olivia J Johnson
Metrics
H-Index
i10 Index
Citation Counts
7
5
208
Marine Ecology
Marine Biodiversity
Climate Change
Fisheries & Ecosystem Management
Rankings
Ranking Based On Selection: 38
Jarrah Orphin
Metrics
H-Index
i10 Index
Citation Counts
7
5
116
Rankings
Ranking Based On Selection: 39
Amelia E Fowles
Metrics
H-Index
i10 Index
Citation Counts
6
6
111
Marine Ecology
Biodiversity conservation
Environmental Management
Urban Pollution
Rankings
Ranking Based On Selection: 40
Tamara Schlosser
Metrics
H-Index
i10 Index
Citation Counts
6
5
121
Rankings
Ranking Based On Selection: 41
Camille Couzi
Metrics
H-Index
i10 Index
Citation Counts
6
5
116
Physical oceanography
Acoustics
Marine Instrumentation
Data processing
Rankings
Ranking Based On Selection: 42
Natalia Ribeiro
Metrics
H-Index
i10 Index
Citation Counts
6
3
177
Rankings
Ranking Based On Selection: 43
Ella Clausius
Metrics
H-Index
i10 Index
Citation Counts
5
5
190
Rankings
Ranking Based On Selection: 44
Prashant Bhaskar
Metrics
H-Index
i10 Index
Citation Counts
4
4
113
Rankings
Ranking Based On Selection: 45
Malcolm S Johnson
Metrics
H-Index
i10 Index
Citation Counts
4
4
67
coastal resource management
island studies
human ecology mapping
Rankings
Ranking Based On Selection: 47
Paula Andrea Ruiz-Ruiz
Metrics
H-Index
i10 Index
Citation Counts
4
1
35
Marine Ecology
Environmental Science
Marine Biology
Physiology
Underwater Soundscape
Rankings
Ranking Based On Selection: 48
Gamini Lokuketagoda
Metrics
H-Index
i10 Index
Citation Counts
4
1
47
Rankings
Ranking Based On Selection: 49
Jcmontesherrera
Metrics
H-Index
i10 Index
Citation Counts
3
2
60
Rankings
Ranking Based On Selection: 50
Vincent Hs Yap
Metrics
H-Index
i10 Index
Citation Counts
3
2
58
Rankings
Ranking Based On Selection: 51
Joana Bento De Almeida
Metrics
H-Index
i10 Index
Citation Counts
3
2
38
marine biology
marine ecology
climate change
conservation
invertebrates
Rankings
Ranking Based On Selection: 52
Tormey Reimer
Metrics
H-Index
i10 Index
Citation Counts
2
2
120
Rankings
Ranking Based On Selection: 53
Joakim Trygg Mansson
Metrics
H-Index
i10 Index
Citation Counts
2
1
46
Rankings
Ranking Based On Selection: 54
Edie Bishop
Metrics
H-Index
i10 Index
Citation Counts
2
1
37
Marine ecology
Quantitative ecology
Spatial Ecology
conservation
Rankings
Ranking Based On Selection: 55
Angus F Henderson
Metrics
H-Index
i10 Index
Citation Counts
2
1
18
Rankings
Ranking Based On Selection: 56
Phuc Le
Metrics
H-Index
i10 Index
Citation Counts
2
1
16
Rankings
Ranking Based On Selection: 57
Sophia Volzke
Metrics
H-Index
i10 Index
Citation Counts
2
1
14
Marine Ecology
Ecological Modelling
Marine Predator Biology
Rankings
Ranking Based On Selection: 58
Qianjiang Xing
Metrics
H-Index
i10 Index
Citation Counts
2
0
8
Rankings
Ranking Based On Selection: 59
William Peter Symington
Metrics
H-Index
i10 Index
Citation Counts
2
1
51
Rankings
Ranking Based On Selection: 61
Ali Motamedinezhad
Metrics
H-Index
i10 Index
Citation Counts
1
1
37
Ocean Engineering
Hydrodynamics
Hydroelasticity
Multiphase Flows
CFD
Rankings
Ranking Based On Selection: 62
Dan Probert
Metrics
H-Index
i10 Index
Citation Counts
1
0
5
Rankings
Ranking Based On Selection: 63
Fauzi Hardjanto
Metrics
H-Index
i10 Index
Citation Counts
1
0
2
Ocean wave mechanics
floating structures
marine risers
marine pipelines