Long-time WHOI research associate Bruce Tripp, now retired, instructs Summer Student Fellows Maya Becker and Sam Kastner in the preparation of Niskin bottles, water-sampling instruments they later deployed over the side of R/V Tioga. (Photo by Jayne Doucette, Woods Hole Oceanographic Institution)

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Long-time WHOI research associate Bruce Tripp, now retired, instructs Summer Student Fellows Maya Becker and Sam Kastner in the preparation of Niskin bottles, water-sampling instruments they later deployed over the side of R/V Tioga. (Photo by Jayne Doucette, Woods Hole Oceanographic Institution)