Galapagos Marine Life
The combination of warm tropical waters and the upwelling
nutrient rich cool Humboldt
waters allows the Galapagos Islands to support a wide array of marine life.
These waters are home to sharks, sea
turtles, sea
lions, and 306 varieties of fish, 25% of these fish are endemic. There
are few coral reefs in these waters, instead the crevasses in the lava provides the
function of a reef in other environments. Smaller fish
live protected within the crevasses coming out to feed, and invertebrates
make their home in the lava. The marine food chain and life is established
around the lava as larger fish live near the lava area where they feed on
the smaller fish.
Viewing Marine Life
Diving in the Galapagos has been rapidly increasing in the last few years.
Dive trips focus on viewing the Marine Life. These trips visit some of the remote island
areas like Darwin and Wolf where land visits are not possible, but diving is exceptional.
The highlight of these trips is viewing the Galapagos' big animals including Whale
Sharks and Hammerheads.
Natural history cruises also allow visitors to have a glimpse of life under the sea.
These trips offer snorkeling excursions in place like Devil's Crown a submerged
volcano, which offers an experience similar to swimming in a tropical fish tank.
The Galapagos Marine Life is incredible and this is an opportunity not to be missed.
To find out more about Diving in Galapagos please see
our Galapagos
Tours section
Sea Turtles
The Pacific Green Sea Turtles spend most of their lives in the
ocean. Adult shells grow to 3 ft (1 m) in length with a body weight of up to
400 lbs. (180 kg). These cousins to the tortoise mate in the waters near the
Galapagos and are often seen near Caleta Tortuga Negra on Santiago. Males
never leave the sea, but females come ashore on beaches to nest and lay eggs
on several of the islands.
Green Sea Turtles are an endangered species. Turtle eggs are eaten and
pigs and rates frequently destroyed their nests. Hawks,
herons, mockingbirds, and frigatebirds prey on young hatchlings. If these young turtles make it to the sea, fish and
sharks hunt them.
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 Whales and Dolphins
In the 19th century whale oil was a main source of energy around the
world. Man set out on boats to hunt whales. Whales, dolphin and porpoises all
have a blubbery layer of fat around their body. This blubber allows them to stay
warm in cold waters and gives them extra energy during long migrations. It was this
blubber that the whalers would seek; they would melt it down creating whale oil.
The Galapagos Islands were the center of whaling in the Pacific Ocean.
The practice of whaling has stopped and many of these large mammals still
visit the Galapagos during their migrations. Whales, Dolphin and Porpoises make up a
family of Cetaceans; the family can be divided into 2 parts those with teeth and
those with Baleen Plates.
Baleen Plates
are large, horny triangular pieces
of whalebones occurring on the upper jaw of toothless whales. The Baleen grows
from 2 - 12 ft (.6 - 3.6 m) rows along the gums of the upper jaw. The whales
push water through the plate allowing them to feed on plankton, shrimp, sardines and other
small creatures. Those animals with Baleen Plates are the larger whales
including the Blue, Finback, Sei, Humpback, Bryde's and Minke; all which can be seen in
the Galapagos waters.
Toothed Cetaceans are a more diverse group including the large Sperm Whale,
the Orca, the False Killer Whale, Short Finned Pilot Whale, and several
Dolphins. All are frequently seen in the waters surrounding the Galapagos. The Bottled Nosed Dolphin and
White Bellied Dolphin live in these waters. Bottled Nosed Dolphins can be seen
riding the bow wave in front of boats. White Bellied Dolphin can be seen in schools
of more than 100.
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