Tetra fish swarm a swimmer as they are fed in the spring-fed swimming pool at Balmorhea State Park in Toyhvale, Texas. Environmentalists worry that drilling may contaminate the spring.
Tetra fish swarm a swimmer as they are fed in the spring-fed swimming pool at Balmorhea State Park in Toyhvale, Texas. Environmentalists worry that drilling may contaminate the spring. LM Otero AP archives
Tetra fish swarm a swimmer as they are fed in the spring-fed swimming pool at Balmorhea State Park in Toyhvale, Texas. Environmentalists worry that drilling may contaminate the spring. LM Otero AP archives