A shallow coral bank ~130 km north of the Dominican Republic where thousands of North Atlantic humpback whales gather each winter to breed and calve. This is a snorkel-only, liveaboard-only experience — not a scuba destination — and one of only about three places on Earth that permit regulated in-water humpback encounters.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
The Silver Bank (Banco de la Plata) is a shallow carbonate platform roughly 130 km north of the Dominican Republic, inside the Sanctuary for the Marine Mammals of the Dominican Republic — created by decree on 14 October 1986 and the first marine-mammal sanctuary established in the Atlantic. Each winter (roughly mid-January through early April) thousands of North Atlantic humpback whales (Megaptera novaeangliae) — estimates range from about 3,000 to several thousand — gather here to court, mate, and give birth, making it one of the species' largest breeding aggregations on Earth. This is emphatically NOT a scuba destination: diving is prohibited in the sanctuary except by special research permit, so all in-water encounters are snorkel/freedive-only, conducted as guided, passive 'soft-in-water encounters' from small tenders. Access is liveaboard-only — only three vessel permits are issued for the entire season (around 600 visitors a year total), with week-long Saturday-to-Saturday trips crossing overnight from Puerto Plata to a sheltered anchorage inside the reef. The whole experience is the whales: singing males, mother-and-calf pairs resting at the surface, and competitive 'rowdy groups.' Conditions are weather-dependent — winds above ~25 mph suspend tender operations.
Highlights
What makes this dive worth the trip.
This is a snorkel- and freedive-only experience, not a scuba destination: no scuba diving is permitted in the sanctuary except by special research/film permit, so all in-water time is passive surface snorkelling — guides watch a mother and calf settle to rest, then guests quietly slip in without descending into the water column.
Access is liveaboard-only and tightly capped: only three vessel permits are issued for the whole season, limiting visitation to under 60 people a week — roughly 600 in an entire season. During the whale season no boat may visit the Silver Bank without a permit, and trips run Saturday-to-Saturday with an overnight crossing from Puerto Plata.
The Silver Bank hosts one of the largest North Atlantic humpback breeding aggregations on Earth: thousands of whales gather from roughly January through April to court, mate, and give birth in the warm, sheltered water. It is one of only about three places worldwide — alongside Tonga and French Polynesia — that permit regulated, organised in-water humpback encounters.
Marine life
12 species you’re likely to encounter on a dive here.
Dive sites
4 signature sites at this destination.
Open Bank Encounter Zones
The wider shallow plateau of the bank — roughly 25 by 35 miles of 18–30 m water — across which the tenders roam to find singing males, solitary 'escort' whales, and the competitive multi-male 'rowdy groups' that form during the breeding season. There are no fixed dive sites here: the whales set the agenda, and guides position the tender for a passive in-water approach only when behaviour and conditions allow. No scuba, no diving down — guests stay at the surface and let curious whales approach. Most of the trip's deeper-water surface encounters with active whales happen in these open zones rather than over the reef.
18–30 mbeginnerLiveaboardLightVisibility 15–30 m
Wreck of the Polyxeni
A Greek freighter, over 150 ft (46 m) long, that ran aground and sank on the bank more than forty years ago; much of the hull originally rested above the surface among the coral heads and has since broken up and crumbled along the seabed. It lies less than a mile from the mooring area in about 30 ft (9 m) of water and is the trip's favourite dedicated snorkel spot — snorkel-only, like everywhere in the sanctuary, and boardable above water only with government permission. Resting humpbacks, including singing males, are sometimes found among the coral-reef passages right beside the wreck.
0–9 mbeginnerLiveaboardLightVisibility 12–25 m
The Sheltered Anchorage (Mooring Area)
A protected anchorage inside the reef where the permitted liveaboards moor for the week, after the overnight crossing from Puerto Plata. It is the daily launch point for two tender excursions in search of whales, typically working within a couple of miles of the boat — encounters are by snorkel only, with guests slipping quietly in once a whale settles. This is the operational heart of the trip rather than a reef dive; the surrounding shallow water is where the bulk of passive surface encounters with mother-and-calf pairs happen.
0–12 mbeginnerLiveaboardLightVisibility 10–20 m
Coral Heads (Northwest of the Mooring)
The chain of coral heads along the bank's northeastern edge, where many reefs rise to or break the surface, especially at low tide. This is a primary snorkel-encounter zone: mothers and calves move through the narrow coral-reef passages and stop to rest, and curious whales have led snorkellers on tours of the channels. There is no scuba here — the heads are too shallow and the sanctuary prohibits diving — so encounters are passive, surface-only, from a tender that holds back until the whales settle. Conditions are weather-dependent; small-boat work is suspended when wind exceeds about 25 mph.
0–6 mbeginnerLiveaboardLightVisibility 12–30 m
Where to dive & stay
Local dive centers, resorts, and hotels.
Featured operators coming soon
Verified dive centers, resorts, and hotels around Silver Bank (humpbacks) will list here — pricing, photos, and direct contact.
