When a sea star strives to get near an urchin, the urchin moves its spines aside and lets the sea star's arm get really close. Then the pincers chomp on the sea star's tube feet. The sea star immediately backs off. However, purple sea urchins' pincers can't defend against sunflower stars. If a sunflower star approaches, an urchin waves its spines and pincers and retreats. If the urchin doesn't move away fast enough, the sunflower star swallows the urchin whole.
Interpersonal therapy: A form of psychotherapy in which the focus is on a patient's relationships with peers and family members and the way they see themselves.Interpersonal psychotherapy (IPT) is based on exploring issues in relationships with other people.nterpersonal therapy: A form of psychotherapy in which the focus is on a patient's relationships with peers and family members and the way they see themselves.
Family/Systemic therapy. Family therapy, also referred to as systemic therapy, is an approach that works with families and those who are in close relationships to foster change.These changes are viewed in terms of the systems of interaction between each person in the family or relationship.amily therapy will typically take place in the form of sessions in which individuals and their loved ones will be brought together with a family therapist to discuss the issues that are affecting their relationships.