APNDX 27 Sea

This is an appendix to: The World According To Measurements - 28

---

Counts of in situ measurements taken from 1800 to 2025
and recorded in the World Ocean Database:

Location: Sea of Okhotsk

Depth	1800's	1900's	2000's	Total
10m	1	149	20	170
20m	0	139	20	159
30m	0	138	20	158
50m	0	137	20	157
75m	0	133	20	153
100m	0	131	20	151
125m	0	126	19	145
150m	0	122	19	141
200m	0	119	19	138
250m	0	118	19	137
300m	0	117	19	136
400m	0	107	19	126
500m	0	106	19	125
600m	0	89	19	108
700m	0	93	19	112
800m	0	86	19	105
900m	0	88	19	107
1000m	0	82	19	101
1100m	0	69	19	88
1200m	0	60	18	78
1300m	0	51	17	68
1400m	0	46	17	63
1500m	0	36	17	53
1750m	0	11	16	27
2000m	0	12	1	13
2500m	0	6	1	7
3000m	0	5	0	5
3500m	0	1	0	1
4000m	0	1	0	1
4500m	0	1	0	1
5000m	0	1	0	1
5500m	0	1	0	1
>5500m	0	1	0	1

Location: Sulu Sea

Depth	1800's	1900's	2000's	Total
10m	1	56	25	82
20m	0	57	25	82
30m	1	57	25	83
50m	1	57	25	83
75m	1	57	25	83
100m	0	57	25	82
125m	0	55	25	80
150m	1	55	25	81
200m	0	55	25	80
250m	1	55	25	81
300m	1	55	25	81
400m	0	54	25	79
500m	0	53	25	78
600m	0	47	25	72
700m	1	48	25	74
800m	0	47	25	72
900m	1	49	25	75
1000m	0	48	25	73
1100m	0	46	25	71
1200m	0	44	25	69
1300m	0	41	25	66
1400m	1	41	25	67
1500m	0	40	25	65
1750m	0	34	25	59
2000m	1	35	19	55
2500m	0	31	9	40
3000m	0	30	10	40
3500m	1	29	8	38
4000m	0	25	4	29
4500m	1	21	3	25
5000m	0	17	1	18
5500m	0	9	1	10
>5500m	0	8	1	9

Location: Sea of Japan

Depth	1800's	1900's	2000's	Total
10m	0	150	50	200
20m	0	150	50	200
30m	0	149	50	199
50m	0	148	50	198
75m	0	147	50	197
100m	0	147	50	197
125m	0	145	50	195
150m	0	147	50	197
200m	0	147	50	197
250m	0	147	50	197
300m	0	146	50	196
400m	0	146	50	196
500m	0	144	50	194
600m	0	137	50	187
700m	0	135	50	185
800m	0	131	50	181
900m	0	133	49	182
1000m	0	135	49	184
1100m	0	119	48	167
1200m	0	115	47	162
1300m	0	107	46	153
1400m	0	112	46	158
1500m	0	120	46	166
1750m	0	100	46	146
2000m	0	107	49	156
2500m	0	98	43	141
3000m	0	90	41	131
3500m	0	63	37	100
4000m	0	34	18	52
4500m	0	14	14	28
5000m	0	2	0	2
>5500m	0	1	0	1

Location: Red Sea

Depth	1800's	1900's	2000's	Total
10m	4	105	45	154
20m	2	101	45	148
30m	2	100	45	147
50m	3	90	45	138
75m	2	89	45	136
100m	3	88	45	136
125m	2	85	45	132
150m	2	87	45	134
200m	3	86	45	134
250m	1	87	45	133
300m	3	87	45	135
400m	3	83	45	131
500m	3	81	43	127
600m	3	70	43	116
700m	2	70	32	104
800m	2	63	30	95
900m	3	70	29	102
1000m	1	66	27	94
1100m	2	55	23	80
1200m	1	47	16	64
1300m	1	41	11	53
1400m	0	43	9	52
1500m	0	46	9	55
1750m	2	34	9	45
2000m	1	25	2	28
2500m	0	5	0	5
3000m	0	1	0	1

Location: Mediterranean

Depth	1800's	1900's	2000's	Total
10m	8	548	196	752
20m	8	527	195	730
30m	8	516	192	716
50m	8	505	192	705
75m	6	498	191	695
100m	7	490	191	688
125m	7	466	191	664
150m	6	472	192	670
200m	7	452	192	651
250m	4	435	192	631
300m	6	433	193	632
400m	6	419	191	616
500m	7	416	193	616
600m	4	381	188	573
700m	6	383	185	574
800m	5	372	182	559
900m	3	383	185	571
1000m	6	377	183	566
1100m	2	357	183	542
1200m	3	331	179	513
1300m	2	318	175	495
1400m	2	314	174	490
1500m	5	309	166	480
1750m	4	295	147	446
2000m	4	280	106	390
2500m	3	182	56	241
3000m	2	82	26	110
3500m	2	43	17	62
4000m	1	19	8	28
4500m	0	6	4	10
5000m	0	1	2	3
5500m	0	0	2	2
>5500m	0	0	2	2

Location: Caribbean Sea

Depth	1800's	1900's	2000's	Total
10m	0	50	21	71
20m	0	49	21	70
30m	0	50	21	71
50m	0	50	21	71
75m	0	48	21	69
100m	0	48	21	69
125m	0	47	21	68
150m	0	47	21	68
200m	0	47	21	68
250m	0	45	21	66
300m	0	45	21	66
400m	0	44	21	65
500m	0	40	21	61
600m	0	39	21	60
700m	0	39	21	60
800m	0	39	21	60
900m	0	40	21	61
1000m	0	39	21	60
1100m	0	38	19	57
1200m	0	38	14	52
1300m	0	37	14	51
1400m	0	35	14	49
1500m	0	34	13	47
1750m	0	31	13	44
2000m	0	32	10	42
2500m	0	27	0	27
3000m	0	22	0	22
3500m	0	19	0	19
4000m	0	14	0	14
4500m	0	14	0	14
5000m	0	7	0	7
5500m	0	5	0	5
>5500m	0	4	0	4

Location: Seto Inland Sea

Depth	1800's	1900's	2000's	Total
10m	0	75	25	100
20m	0	75	25	100
30m	0	75	25	100
50m	0	74	25	99
75m	0	74	25	99
100m	0	74	25	99
125m	0	74	25	99
150m	0	74	25	99
200m	0	74	25	99
250m	0	74	25	99
300m	0	74	25	99
400m	0	74	25	99
500m	0	74	25	99
600m	0	74	25	99
700m	0	74	25	99
800m	0	74	25	99
900m	0	73	25	98
1000m	0	73	25	98
1100m	0	67	25	92
1200m	0	66	25	91
1300m	0	61	25	86
1400m	0	62	25	87
1500m	0	67	25	92
1750m	0	53	25	78
2000m	0	58	25	83
2500m	0	53	23	76
3000m	0	47	21	68
3500m	0	41	18	59
4000m	0	34	18	52
4500m	0	14	14	28
5000m	0	2	0	2
>5500m	0	1	0	1

Location: North Sea

Depth	1800's	1900's	2000's	Total
10m	1	94	25	120
20m	1	94	25	120
30m	1	94	25	120
50m	1	93	25	119
75m	1	93	24	118
100m	1	93	23	117
125m	1	92	22	115
150m	0	92	22	114
200m	0	92	21	113
250m	0	93	21	114
300m	1	90	21	112
400m	0	86	21	107
500m	0	82	21	103
600m	0	76	20	96
700m	0	6	0	6
800m	0	1	0	1
900m	0	1	0	1
1000m	0	1	0	1
1100m	0	1	0	1
1200m	0	1	0	1
1300m	0	1	0	1
1400m	0	1	0	1
1500m	0	1	0	1
1750m	0	1	0	1
2000m	0	2	0	2

Location: Yellow Sea

Depth	1800's	1900's	2000's	Total
10m	0	73	25	98
20m	0	72	25	97
30m	0	72	25	97
50m	0	72	25	97
75m	0	70	25	95
100m	0	70	25	95
125m	0	69	25	94
150m	0	70	25	95
200m	0	70	25	95
250m	0	64	25	89
300m	0	64	25	89
400m	0	63	25	88
500m	0	64	25	89
600m	0	59	25	84
700m	0	54	25	79
800m	0	45	23	68
900m	0	19	12	31
1000m	0	16	1	17
1100m	0	9	0	9
1200m	0	7	0	7
1300m	0	2	0	2
1400m	0	6	0	6
1500m	0	6	0	6
1750m	0	5	1	6
2000m	0	6	0	6
2500m	0	2	0	2
3000m	0	1	0	1
3500m	0	1	0	1
4000m	0	1	0	1
4500m	0	1	0	1

Location: South China Sea

Depth	1800's	1900's	2000's	Total
10m	0	139	50	189
20m	0	139	50	189
30m	0	139	50	189
50m	0	139	50	189
75m	0	139	50	189
100m	0	139	50	189
125m	0	139	50	189
150m	0	138	50	188
200m	0	138	50	188
250m	0	138	50	188
300m	0	138	50	188
400m	0	138	50	188
500m	0	136	50	186
600m	0	133	50	183
700m	0	133	50	183
800m	0	131	50	181
900m	0	131	50	181
1000m	0	128	50	178
1100m	0	116	50	166
1200m	0	115	50	165
1300m	0	106	50	156
1400m	0	105	50	155
1500m	0	114	50	164
1750m	0	91	50	141
2000m	0	97	50	147
2500m	0	92	46	138
3000m	0	87	46	133
3500m	0	85	46	131
4000m	0	78	46	124
4500m	0	64	46	110
5000m	0	50	35	85
5500m	0	26	25	51
>5500m	0	13	16	29

Location: Black Sea

Depth	1800's	1900's	2000's	Total
10m	1	229	24	254
20m	1	218	24	243
30m	1	210	24	235
50m	1	216	24	241
75m	1	197	24	222
100m	0	207	19	226
125m	1	93	19	113
150m	1	188	19	208
200m	1	187	17	205
250m	1	153	16	170
300m	1	172	16	189
400m	0	166	16	182
500m	1	147	16	164
600m	0	133	16	149
700m	1	133	16	150
800m	0	70	16	86
900m	1	44	16	61
1000m	0	33	15	48
1100m	1	26	15	42
1200m	0	22	15	37
1300m	0	23	15	38
1400m	0	22	14	36
1500m	1	24	8	33
1750m	0	9	1	10
2000m	0	1	0	1