Underwater Life

California San Diego Sharks Underwater Life

Blue Shark Eye to Eye

Blue shark showing ampullae of Lorenzini, eye and small portion of nictitating membrane.Image ID: 01076Species: Blue shark, Prionace glaucaLocation: San Diego, California, USA This is a photograph of a blue shark, Prionace glauca. We bait for them offshore of San Diego, anywhere from 5 to 20 miles offshore (however far…

Phil CollaFebruary 4, 2005

Blue Whale Natural World Underwater Life

The Blue Whale, Largest Animal On Earth

The blue whale, Balaenoptera musculus, is the largest animal ever to have lived on Earth. Depending on which expert is cited, blue whales once attained lengths of 100 to 120 feet (32 meters) and have weighed up to 160 tons (145 metric tonnes). Blue whales are found throughout the worlds…

Phil CollaFebruary 4, 2005

Fish Florida Underwater Life

Photo of Mangrove Snapper in Three Sisters Spring

Mangrove snapper. Image ID: 02685 Species: Mangrove snapper, Lutjanus griseus Location: Three Sisters Springs, Crystal River, Florida, USA I spent a week one winter hanging out at the Three Sisters spring in Crystal River, Florida, photographing manatees. Early in the week the weather was cold so plenty of manatees were…

Phil CollaFebruary 2, 2005

Florida Manatee Marine Life Underwater Life

Photo of West Indian Manatee, Crystal River, Florida

A West Indian manatee, also known as a Florida manatee, at the Three Sisters Springs on the Crystal River, Florida. A Florida manatee, or West Indian Manatee, swims slowly through the clear waters of Crystal River. Image ID: 02696 Species: West Indian manatee, Trichechus manatus Location: Three Sisters Springs, Crystal…

Phil CollaFebruary 1, 2005

Great White Shark Guadalupe Island Mexico Underwater Life

Sex and the Single Shark

In the world of wildlife study, in which efforts are made to identify and track individual animals over time, researchers can fall prey to the temptation to name their subjects. There is considerable debate about the merits of this, as some scientists feel that assigning names to the animal subjects…

Phil CollaJanuary 30, 2005