[Ocean Oasis Field Guide] Satellite image of the Baja California peninsula and Gulf of California See Spanish version

Relating to, composed of, or found in alluvium, which is clay, silt, sand, gravel, or other similar material deposited by running water.
Small crustaceans living in or next to the water, including sand fleas and whale lice.
Said of a plant species that has individuals with perfect flowers and individuals with staminate flowers.
A generally circular cluster of spines on members of the cactus family.
A special covering for seeds that develops from the seed stalk. It's often brightly colored, and serves as a signal for seed dispersers.
Baleen plates
Long plates of horny material that hang in rows from the roof of the mouth of some whales. They are used to strain food from the water.
A nostril opening on the top of the head of cetaceans (whales, porpoises, dolphins).
Hard or chitinous covering or shield protecting the body of the animal, such as a crab.
Any member of the order Cetacea—a group of primarily marine mammals occurring throughout the world's oceans, as well as in some tropical rivers and lakes. The name whale is often used to refer to larger species, while dolphin or porpoise is used for the smaller members of the order.
Small silvery fishes in the Clupeidae family. The Herrings (Sardinas, Arenques)
Living with, on or in another organism, without harm to either. See Teacher's Guide Activity 11
Compound eye
Type of eye subdivided into many individual, light-receptive parts, such as that found in insects, crustaceans, etc.
To fall off or shed seasonally; usually refers to the leaves of a plant.
Said of a plant species which has some individuals which bear only staminate flowers, and some which bear only pistillate flowers, and there are no perfect flowers. These are the species that are commonly referred to as having male and female plants.
Parasite found on external part of the host's body.
Belonging or native to a particular people or country.
A partly enclosed coastal body of water, open to the ocean so that fresh and salt water are mixed.
Fish Parts

drawing with parts of fish labeled, Liz Paegel

One of the lobes of the tail of a whale or dolphin.
A gamete is a cell involved in sexual reproduction and contains one copy of each chromosome. In males, the gamete is the sperm; in females, it's the egg.
Mollusks in the class Gastropoda, typically with a single shell, including the snails, whelks, etc.
Having a surface without hairs or projections; smooth.
Said of a plant species that has individuals with perfect flowers and individuals with pistillate flowers.
Having both male and female reproductive systems in the same individual.
Pelagic snails with a fin-like foot and reduced shell.
Marine colonial hydrozoan animals that have calcified skeletons.
Freshwater or marine coelenterates of the class Hydrozoa, such as the Portuguese man-of-war, hydras, etc.
An animal that steals food from another animal.
Shaped like a lance head, that is, tapering to a point at the apex and at the base.
A loose group of cells that penetrates the surface, such as the stem, of a woody plant. Gases are exchanged between the atmosphere and the underlying tissues through these cells.
An invertebrate of the phylum Mollusca, typically having a calcified shell of one or more parts, enclosing the soft body of the animal.
Said of a plant species in which all individuals bear both staminate and pistillate flowers, but there are no perfect flowers. For example, oaks—with male flowers in catkins, producing wind-borne pollen, and female flowers on the stems, producing acorns.
An early planktonic larval stage in many crustaceans.
A minute capsule containing an ejectable thread with a stinger; found in certain coelenterates (corals, hydras, jellyfish).
Shell-less marine snails.
Shaped like an egg, with the narrow end at the base.
Gill cover
A specialized organ used for depositing eggs.
Resembling a hand with the fingers outspread.
Pectoral fins
Paired fins, located just behind or below the gill slits, and used for lift and movement control. See fish diagram.
Of or relating to the open ocean.
Pelvic fins
See fish diagram.
Perfect flowers
Perfect (also called bisexual) flowers have both functional male parts (stamens or anthers capable of producing pollen) and functional female parts (pistil or ovary capable of producing seeds).
Slender stem supporting the blade of a foliage leaf.
Any member of the various families of aquatic, fin-footed mammals in the order Carnivora. There are three existing families of pinnipeds: Odobenidae (walrus), Phocidae (earless seals), and Otariidae (eared seals).
Pistillate (or "female") flowers are ones which have a functional pistil, capable of producing seeds—but either have no stamens at all, or have stamens with anthers that are incapable of producing pollen.
Free-swimming larval stage of a coelenterate.
Roots that function as respiratory organs in wetland plants.
A structure, such as a cutting, seed, or spore, that propagates a plant.
A breeding ground, especially of gregarious birds or mammals; also a colony of such birds or mammals
Permanently attached; not freely moving.
Sky Island
A metaphoric reference to high-elevation areas that are separated from each other by air (and other inhospitable habitat) in the same way that islands are separated by water. This means that individuals of species that live on one mountaintop may be unable to cross the intervening terrain to breed with related individuals on other mountaintops, even though they might be quite near.
Small, hard bodies of silica or calcium carbonate that serve as the skeletal elements in sponges.
Staminate (or "male") flowers are ones which have functional stamens, capable of producing pollen—but either have no ovary at all, or an ovary which is not fertile.
Not capable of reproducing. Sterile flowers may have petals and sepals, but no funtional reproductive parts at all.
Linear bony ridges, present on the head bones (often the cheek or gill cover) of some fishes.
Relationship of two dissimilar species living together.
Said of a plant species that has individuals with staminate flowers, individuals with pistillate flowers, and individuals with perfect flowers.
Quality or state of being viviparous.
In animals, giving birth to live young rather than laying eggs. In plants, seeds that germinate (sprout) while still attached to the parent plant.

Fish drawing by Liz Paegel

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