Fig. 1

Localities of sampling sites around Tokyo Bay, Japan. Sampling sites were as follows: (A) Kominato, (B) Chikura, (C) Okinoshima, (D) Tomiura, (E) Takeoka, (F) Kannonzaki, (G) Ena, (H) Bishamon, and (I) Jogashima outside of Tokyo Bay and (J) Shiomi, (K) Obitsu, (L) Kisarazu, (M) Mitate, (N) Yoro, (O) Chiba, (P) Inage, (Q) Funabashi, (R) Sanbanze, (S) Kasai, (T) Wakasu, (U) Odaiba, (V) Tama, (W) Kanazawa, and (X) Nojima in Tokyo Bay